Adult Cats for Adoption in Diamond Bar, CA: 30 Grown-Up Cats Looking for a Home
By Cats of the Day · Updated

Rescues and shelters within 25 miles of Diamond Bar have 515 adult cats up for adoption. Here are the 30 newest, each with photos, their story and how to reach the rescue looking after them.
Adult cats usually wait longer for homes than kittens, but their personalities are already settled, so you know just what you're getting: a lap cat, a chatterbox or an independent explorer.
Not in Diamond Bar? Find cats near your zip code.
1. Zelena
Young (6 months) · Female · Domestic Short Hair (medium coat) · 15 mi from Diamond Bar


* COURTESY POST FOR INDEPENDENT ADOPTER:
Zelena is one of the lucky ones that gets a chance at a life in a loving home, off the streets. She is not as boisterous as her siblings. She is a little bit on the shy side and is playing with people daily to build her confidence. She loves her hammocks and wand toys. She is so beautiful and such a sweet soul. She needs a quiet home that will be a little more patient with her so she can come around at her own pace. She will make you a wonderful friend and companion!
Read more about Zelena
* Date of Birth: March 2026 (approx)
* Spayed
* Vaccinated
* SNAP Test Results:
*FELV Negative
*FIV Negative
* Microchipped
* Flea Treated
* Dewormed
* Litterbox Trained: Open Box
* Litter Preference: All-Natural & Unscented Litter
* Scratch Post Preference: Rope Sisal & Cardboard
* Littermates and/or Best Friends: Wizard & Zelena
* Ask about our Adopt-A-Pair program to keep best friends & siblings together!
Another life saved from the streets - Sterilize, Don't Euthanize!
INQUIRY FORMS:
. Are for additional questions
. Don't begin the adoption process
. IMPORTANT: Please include your phone number
ADOPTION APPLICATIONS:
. Get the adoption process moving forward
. Receive priority over inquiries
. Can be filled out below or on our website:
www.thetnrproject.org/adoption-application
- Good with kids
- Good with cats
- House-trained
2. Kiwi 2
Adult (5 years) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar


Hi, I’m Kiwi! I’m a 5-year-old girl looking for a new family because sadly, my owner is moving and can’t take me along.
I’m a loving, cuddly girl who loves being close to my person. Once I choose you, I’ll be your little shadow, snuggling beside you at night and filling your days with love. I also have a playful side and love to hunt! I can tolerate other cats and get along with small dogs, but I’d truly thrive as your one and only. All I want is a person to call my own and a forever home where I’ll always be loved. Could you be my second chance?
Adoption fee: $85
Read more about Kiwi 2
I am all ready for my new home! I have been seen by a veterinarian, have all shots I was able to get when I was sterilized or they checked my sterilization status. I am microchipped and all I need now is you! I am currently living in a foster home and am fully litter trained. I can't wait to meet you so please fill out an application for me today!
_______________________________________________________________________
Adoption process:
PLEASE NOTE: THIS IS A PRIVATE ADOPTION. WE HAVE CHECKED THE MEDICAL IS DONE BUT DO NOT CLAIM RESPONSIBILITY FOR THESE ADOPTIONS. THE ADOPTION IS BETWEEN YOU AND THE RESCUER. These cats do need homes and are not in our rescue due to space, this doesn't mean they aren't wonderful animals who need families. Be sure to ask all the questions you need of the rescuer to ensure a proper fit into your home.
Log into our website and complete the adoption application at link below:
Applications : Forms (rescuegroups.org)
Once approved, check back if you haven't heard in 48 hours. Once your application has been approved, your information will be forwarded to the rescuer if the phone number is not listed in this posting. Please let us know if the rescuer does not contact you in a timely manner.
All animals have been sterilized, received 2 sets of FVCRP vaccines, rabies (if over 4 months at time of sterilization), and microchipped unless otherwise noted in paperwork.
- Good with cats
- Good with dogs
- House-trained
3. Koni
Young · Female · Siamese (short coat) · 16 mi from Diamond Bar


Koni is a stunning Lilac Point Siamese! Koni has the most engaging charming personality! She is super playful but loves her human as much as her toys. She very distinct lilac point marking and the most amazing blue eyes. She is all that and a bag of chips! You have it all with Koni. She is a one in a million beautiful affectionate girl!
She loves her Bengal friend Savanna and would love to go to her forever home with her friend Savanna!
- Good with cats
4. Savanna
Young · Female · Bengal / Tabby / Mixed (short coat) · 16 mi from Diamond Bar



Savanna is one beautiful girl! But don't let her looks fool you she is a very charming and loving girl. Savanna loves attention, is very affectionate, easily pick up and held and gets along well with other cats. Her favorite buddy is Koni and she would love to go to her forever home with her BFF!
- Good with cats
5. Mitzi
Adult (1 year) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar




Hi, my name is Mitzi. I am a very friendly girl, so I think I had a home once. I wandered into a yard, and the lady thought her dogs might hurt me, so she brought me to SBACC. I am a very active cat who still has lots of kitten energy. I love to run around, explore, and play. I am also talkative and will let you know when I want something. In addition to being friendly, I am affectionate and enyoy being held and cuddled. Some people might say I am the purrfect cat, so I expect to find my forever home very, very soon. And, BTW, I am also pretty cute.
- Good with cats
- House-trained
6. Taylor
Adult (1 year) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar


Hi, my name is Taylor. I was left behind when my person moved, and I spent weeks hanging out in a backyard. She noticed something strange on my nose and was not sure whether it was an injury or an infection, but she did not want it to get worse, so she brought me to SBACC. The vet checked me out and even did a skin biopsy, which showed no parasitic infections, but they said I probably had flea or other insect bites. It is taking me a little while to get used to life at SBACC, and I am just starting to emerge from the cubby that I have been hiding in. I am a really friendly cat, and I like people and pets. I am not looking my best right now because of my nose injury, but it is starting to get better, and I know I will be looking great pretty soon. I am hoping for a forever home before the holidays.
- Good with cats
- House-trained
7. Eclair 2
Young (7 months) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar


Hi, I’m Eclair! I’m a shy little tuxedo girl, but once you get to know me, I promise I’ll steal your heart! I love playing with other cats, especially my siblings, so having a kitty friend would make me so happy. Treats and snacks are definitely the way to my heart! I’m also quite the talker when I’m hungry, and when I’m not playing or asking for snacks, you can usually find me soaking up the sunshine.
I might need a little time to warm up, but with patience and love, I know I’ll blossom. I’m just a little girl waiting for someone to see how special I am. Could you be my forever family?
*Adoption fee: $150
*Note:
Read more about Eclair 2
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
_______________________________________________________________________
- Good with cats
- House-trained
8. Bella
Adult (5 years 2 months) · Female · Domestic Short Hair / Calico / Mixed (medium coat) · 23 mi from Diamond Bar




Hi, my name is Bella. I was rescued from an overcrowded shelter and brought to SBACC. It was obvious that I was very pregnant, and I delivered six kittens in my foster home the very next day. Sadly, one of them did not survive, but the other five have grown into happy, healthy kittens and will soon be ready for their forever homes. I took very good care of my kittens, but I am now done with motherhood and ready to be loved and pampered in my own home. My foster Mom says that I am the sweetest cat you will ever meet. I am very vocal and love to chat with my people, always letting you know when I want attention. More than anything, I love curling up in your lap and soaking up all the cuddles I can get. If you are looking for a loving companion who wants to be by your side, I am the perfect lap cat and will happily keep you company every chance I get.
- Good with cats
- House-trained
9. Clover
Young (1 year 5 months) · Female · Domestic Short Hair (short coat) · 21 mi from Diamond Bar


#
A5805070 Clover
Beautiful Clover has the most gorgeous green eyes, but right now she's feeling a little overwhelmed by shelter life. ❤️
This sweet black-and-white girl was owner surrendered on October 9, and she's understandably a little frightened.
She's going to need someone patient who will give her plenty of time to decompress and settle into a new environment. But we did discover something important about Clover...She LOVES treats!
Sometimes the way to a nervous kitty's heart is through her stomach!
-Domestic Shorthair, Black & White
-1 year, 6 months
-Spayed and microchipped female
-9.4 lbs as of October 9
-Microchipped
-Owner surrender
Read more about Clover
Clover is a sweet girl who needs a quiet, understanding home and someone willing to let her settle at her own pace.
A few treats probably wouldn't hurt either!
A little patience, a few tasty treats and a whole lot of love could change Clover's world.
For more information, contact volunteer Mary at
mary@unitedhopeforanimals.org
Look up this or other animals at Baldwin Park Animal Care Center
https://animalcare.lacounty.gov/view-our-animals/
Use their unique ID NUMBER.
You can also stop by or call…
Address:
4275 Elton St, Baldwin Park, CA 91706
(626) 962-3577
- House-trained
10. Lenore Dove
Adult (5 years) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar




Hi, my name is Lenore Dove, and I am a survivor. I had been abused, but luckily I was rescued and brought to SBACC. Someone who feeds feral cats found me. I had been dumped in a colony of ferals, and she knew I was in bad shape and did not belong there. I had a severely damaged eye that ruptured and had to be removed, and I had bruising on my abdomen and chest that looked like I had been kicked. I also had sores and scabs on my neck and head. I am a bit shy and timid, but I warm up quickly to quiet, gentle people. The people who care for me at SBACC say I am very sweet. I am hoping to find a home where I will be safe and loved forever and ever.
- House-trained
11. Henna
Adult (2 years 1 month) · Female · Domestic Short Hair / Tuxedo / Mixed (short coat) · 23 mi from Diamond Bar


Hi, my name is Henna. I was rescued from an abandoned property along with my two kittens. They went to a foster home, but I stayed at SBACC. I was not in very good shape. I had a severely damaged eye that had to be removed, and I have a significant head tilt. Some specialists have checked it out, and they think it’s due to an ear infection and some inner ear issues. It might be with me forever. Despite this, I am a very friendly girl and a ball of energy. I am hoping for a forever home, and I would probably do best as an only cat.
- Only cat
- House-trained
12. Pepper Jack
Adult (1 year 4 months) · Male · Domestic Short Hair / Mixed (short coat) · 21 mi from Diamond Bar



Pepper Jack is a sweet, gentle boy estimated to have been born May 25, 2025. He may be a little shy when you first meet him, but give him time and you’ll soon see his lovely personality shine. Pepper Jack absolutely loves face rubs and will reward you with the most adorable, loud purrs. He enjoys a peaceful environment, but don’t let his laid-back nature fool you—he still loves to play and have fun. Pepper Jack is looking for someone who will let him blossom at his own pace. If you’re looking for a mellow, affectionate companion, Pepper Jack may be your perfect match.
- House-trained
13. Seymour
Young (6 months) · Male · Domestic Short Hair / Tuxedo / Mixed (short coat) · 23 mi from Diamond Bar


Hi, I’m Seymour!
I’m a playful, adventurous little guy who can also be super lovable! I enjoy being pet and will happily purr to show you how much I love the attention. I LOVE chasing my laser and playing with all kinds of cat toys! I have the perfect mix of playful energy and sweetness, and I can’t wait to find a forever family to share all my love with. Could that be you?
Adoption fee: $200
*Note:
Read more about Seymour
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
_______________________________________________________________________
- Good with cats
- House-trained
14. Oliver 2
Young (4 months 22 days) · Male · Domestic Medium Hair / Mixed (short coat) · 23 mi from Diamond Bar


Hi, my name is Oliver!
I may be a little shy at first, but give me a little time and I’ll steal your heart! Once I warm up, I’m the sweetest little lovebug. I’ll follow you around, ask for pets, curl up in your lap, purr up a storm, and make the cutest little biscuits.
I have a playful side, too! I get along with other kitties, love my toys, and sometimes you’ll catch me proudly carrying my favorite toys around like little treasures.
I’m a little bundle of sweetness, cuddles, and playful charm, just waiting for my forever family. Could that be you?
Adoption fee: $250
*Note:
Read more about Oliver 2
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
_______________________________________________________________________
- Good with kids
- Good with cats
- House-trained
15. Mariel Hemingway
Young (3 months 3 days) · Female · Calico / Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar



Hey there! I’m Mariel Hemingway! I’m a fun-loving girl with extra toes (yep, I’m a polydactyl!), and I’m always ready for my next adventure! I love jumping, playing, and being a little silly. I may be a bit clumsy, but that just makes me extra cute! I sometimes get carried away with my play bites, so having another kitty around to help me learn good kitty manners would be awesome! Once I’ve gotten all my zoomies out, I’m all about the cuddles. I love sleeping beside my humans and snuggling as close as possible. Could you be the one to give this extra-toed girl her forever home?
*Note:
Read more about Mariel Hemingway
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
_______________________________________________________________________
- House-trained
16. Wizard
Young (7 months) · Male · Domestic Medium Hair (medium coat) · 15 mi from Diamond Bar


Wizard was born into a colony that just kept growing. Thankfully, a smart neighbor began helping TNR to stop the breeding and foster the babies. Wizard has had hands on from the beginning and is such a wonderful guy! He is silly, playful and social, not to mention beautiful with his long fur! He's a hit at adoptions with his 2 sisters who are also beautiful black fluffies. Come and meet Wizard to see if he's the one for you!
Read more about Wizard
* Date of Birth: March 2026 (approx) * Neutered * Vaccinated * SNAP Test Results: *FELV Negative *FIV Negative * Microchipped * Flea Treated * Dewormed * Litterbox Trained: Open Box * Litter Preference: All-Natural & Unscented Litter * Scratch Post Preference: Rope Sisal & Cardboard * Littermates and/or Best Friends: Willow & Zelena (Sisters) * Ask about our Adopt-A-Pair program to keep best friends & siblings together!
INQUIRY FORMS: . Are for additional questions . Don't begin the adoption process . IMPORTANT: Please include your phone number
ADOPTION APPLICATIONS: . Get the adoption process moving forward . Receive priority over inquiries . Can be filled out below or on our website: www.thetnrproject.org/adoption-application
- Good with kids
- Good with cats
- House-trained
17. Willow
Young (7 months) · Female · Domestic Medium Hair (medium coat) · 15 mi from Diamond Bar


Willow was born into a colony that was breeding out of control. The "owners" didn't realize how big of a problem not getting a few cats fixed could be or how fast they can multiply. A concerned neighbor approached them about TNR and helped them get the entire colony fixed and fostered the kittens. Willow is one of those lucky kittens who will know life off the streets!
Willow loves to hang on your arm and play with her siblings all day long. She's a hit at adoptions with her siblings and she is so super sweet. She loves to be doted on and is just a love to have around.
Read more about Willow
* Date of Birth: March 2026 (approx)
* Spayed
* Vaccinated
* SNAP Test Results:
*FELV Negative
*FIV Negative
* Microchipped
* Flea Treated
* Dewormed
* Litterbox Trained: Open Box
* Litter Preference: All-Natural & Unscented Litter
* Scratch Post Preference: Rope Sisal & Cardboard
* Littermates and/or Best Friends: Wizard & Zelena
* Ask about our Adopt-A-Pair program to keep best friends & siblings together!
Another life saved from the streets - Sterilize, Don't Euthanize!
INQUIRY FORMS:
. Are for additional questions
. Don't begin the adoption process
. IMPORTANT: Please include your phone number
ADOPTION APPLICATIONS:
. Get the adoption process moving forward
. Receive priority over inquiries
. Can be filled out below or on our website:
www.thetnrproject.org/adoption-application
- Good with kids
- Good with cats
- House-trained
18. Princess Polly
Adult (2 years 1 month) · Female · Tabby (medium coat) · 15 mi from Diamond Bar


** COURTESY POST FOR INDEPENDENT ADOPTER:
Princess Polly has already beaten the odds, and now she's ready for the happy ending she deserves.
Princess Polly is a petite, gentle girl. When she first appeared, she was severely emaciated, with her bones visibly protruding from starvation. We weren't sure she would survive, but this little fighter proved just how resilient she is. Thanks to lots of love, care, and good food, Princess Polly has made an incredible recovery and is now ready to find her forever home.
Read more about Princess Polly
Polly is the definition of a sweetheart. She absolutely adores wet food and never turns down mealtime. She's a quiet, easygoing couch potato who would much rather curl up beside you than cause any trouble. The moment you start petting her, she melts into a purring puddle of happiness.
One of Polly's favorite things in the world is being brushed. She could happily sit for hours soaking up the attention and affection. Her calm, loving personality makes her a wonderful companion for anyone looking for a gentle and devoted feline friend.
Princess Polly is deeply bonded with her friend Jebediah and takes great comfort in having another cat around. She would thrive in a home with Jebediah or with another friendly feline companion who can help her feel safe and loved.
After everything she's been through, Princess Polly deserves a life filled with soft couches, full bowls, gentle brushes, and endless love. If you're looking for a sweet, quiet companion with a heart as beautiful as her story, Princess Polly may be the perfect match.
* Date of Birth: May 2024 (approx)
* Spayed
* Vaccinated
* SNAP Test Results:
*FELV Negative
*FIV Negative
* Microchipped
* Flea Treated
* Dewormed
* Litterbox Trained: Open Box
* Litter Preference: All-Natural & Unscented Litter
* Scratch Post Preference: Rope Sisal & Cardboard
* Littermates and/or Best Friends: Jebediah
* Ask about our Adopt-A-Pair program to keep best friends & siblings together!
Another life saved from the streets - Sterilize, Don't Euthanize!
INQUIRY FORMS:
. Are for additional questions
. Don't begin the adoption process
. IMPORTANT: Please include your phone number
ADOPTION APPLICATIONS:
. Get the adoption process moving forward
. Receive priority over inquiries
. Can be filled out below or on our website:
www.thetnrproject.org/adoption-application
- Good with kids
- Good with cats
- House-trained
19. Jebediah
Adult (2 years 2 months) · Male · Tabby (short coat) · 15 mi from Diamond Bar


Jebediah is the absolutely sweetest boy who loves to snuggle, talk and give kisses. The ultimate loverboy, he is very gentle, food motivated and happy to be off the streets. Jeb loves to curl up in your arms and get belly rubs. He's very good with other cats and he loves his toys...he is very playful!
Read more about Jebediah
Date of Birth: August 2024 (approx)
Neutered
Vaccinated
SNAP Test Results:
FELV Negative
FIV Negative
Microchipped
Flea Treated
Dewormed
Litterbox Trained: Open Box
Litter Preference: All-Natural & Unscented Litter
Scratch Post Preference: Rope Sisal & Cardboard
Best Friend: Lots of his foster friends who are also available!
Ask About Our Adopt a Pair specials! One rehoming fee, keep bonded cats together!
- Good with kids
- Good with cats
- House-trained
20. Marmont
Adult (1 year 1 month) · Male · Chartreux (short coat) · 15 mi from Diamond Bar




Meet Marmont, a breathtaking Chartreux mix with a heart as grand as his handsome frame. On the 4th of July, Marmont’s life changed forever when he was left abandoned in the bushes alongside an empty carrier and a few empty cat food cans. Terrified, unfixed, and severely underweight, this resilient boy mustered up all his courage and ran straight out of the bushes looking for human help. Since that fateful day, Marmont has been steadily gaining weight, gaining confidence, and discovering what it feels like to be truly safe and cherished.
Read more about Marmont
True to his Chartreux heritage, Marmont is an incredibly loyal, devoted companion who thrives on human connection. While Chartreux cats are famously known for their calm and gentle natures, Marmont adds his own charming twist: he is quite the vocal talker! He will happily follow you from room to room, narrating his day and ensuring he’s always right by your side. Given his background of starvation, it is no surprise that Marmont absolutely adores food and treats, though he remains wonderfully sweet and not food-aggressive in the slightest.
Marmont gets along well with other polite feline friends, but what he wants most in this world is his person. He craves human affection, loves interactive play, adores lounging on tall cat trees, and could spend hours blissfully sunbathing in a warm window. At night, he wants nothing more than to curl up and sleep right next to you. Marmont is still filling out his lush grey coat and sturdy frame, and he is going to be a wonderfully large, impressive boy once fully restored to health. We may not know the hardship of his past, but with your help, his future will be endlessly bright. Reach out to adopt Marmont today and give this deserving boy the forever promise that he will never be abandoned again.
* Date of Birth: August 2025 (approx)
* Neutered
* Vaccinated
* SNAP Test Results:
*FELV Negative
*FIV Negative
* Microchipped
* Flea Treated
* Dewormed
* Litterbox Trained: Open Box
* Litter Preference: All-Natural & Unscented Litter
* Scratch Post Preference: Rope Sisal & Cardboard & Tall Cat Trees to the Ceiling
Another life saved from the streets - Sterilize, Don't Euthanize!
INQUIRY FORMS:
. Are for additional questions
. Don't begin the adoption process
. IMPORTANT: Please include your phone number
ADOPTION APPLICATIONS:
. Get the adoption process moving forward
. Receive priority over inquiries
. Can be filled out below or on our website:
www.thetnrproject.org/adoption-application
- Good with kids
- Good with cats
- House-trained
21. Lucas
Adult (2 years 1 month) · Male · Tabby (short coat) · 15 mi from Diamond Bar



Meet Lucas, a gentle, sweet soul looking for a quiet home where he can be showered with love and pets!
Lucas came to us after surviving a rough time outdoors with a severely injured, degloved tail that required amputation. Despite everything he’s been through, his gentle, sweet nature never wavered—he doesn't have a mean or aggressive bone in his body.
Lucas is fully recovered, resilient, and ready for a peaceful forever home where he can relax, enjoy his treats, and be your loyal lap companion.
Read more about Lucas
* Temperament: Exceptionally sweet, calm, quiet, and even-tempered.
* Favorite Activities: Lounging near sunny windows, scaling cat trees, and being a total couch potato.
* Cuddle Bug Status: High! Lucas would happily spend his entire day receiving attention, scratches, and love from his human.
* Cat Friendly: He absolutely loves other cats and would do wonderfully in a home with friendly feline companions.
* Motivators: Delicious food and kitty treats!
About Lucas:
* Date of Birth: August 2024 (approx)
* Neutered
* Vaccinated
* SNAP Test Results:
*FELV Negative
*FIV Negative
* Microchipped
* Flea Treated
* Dewormed
* Litterbox Trained: Open Box
* Litter Preference: All-Natural & Unscented Litter
* Scratch Post Preference: Rope Sisal & Cardboard
* Littermates and/or Best Friends: Ask the Foster for His Best Buddies!
* Ask about our Adopt-A-Pair program to keep best friends & siblings together!
Another life saved from the streets - Sterilize, Don't Euthanize!
INQUIRY FORMS:
. Are for additional questions
. Don't begin the adoption process
. IMPORTANT: Please include your phone number
ADOPTION APPLICATIONS:
. Get the adoption process moving forward
. Receive priority over inquiries
. Can be filled out below or on our website:
www.thetnrproject.org/adoption-application
- Good with kids
- Good with cats
- House-trained
22. June B
Young (2 months 12 days) · Female · Domestic Short Hair / Calico / Mixed (short coat) · 23 mi from Diamond Bar


Adoption fee: $250
*Note:
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
Read more about June B
_______________________________________________________________________
- Good with cats
- House-trained
23. Savanah
Young (8 months) · Female · Domestic Short Hair (short coat) · 21 mi from Diamond Bar



On Mother’s Day, Savannah was found on the front stoop of an apartment scared to death. Savanah had made it indoors and into an open mailbox to hide. That’s when the person who found her brought her home.
Read more about Savanah
The first two weeks, Savanah hid in the closet and under her bed. Since then, she has been spending more and more time in the living room with rescuer, the other cats, and a frenchie. She no longer hides! She’s NOT needy at all, doesn’t demand attention, and finally enjoys being pet and purrs easily. She cuddles up on the bed whenever she gets a chance. She’s a very sweet soul! No behavior concerns and is low/mid energy. She spends her time birdwatching from the windowsill. With just a bit of patience and love, she should warm up to any calm and loving home in no time.
This is a courtesy post for Savannah's finder. Please fill out an application if you are interested in adopting her and it will be sent to the finder so she can contact you.
- Good with cats
- Good with dogs
- House-trained
24. Pharoah
Young · Male · Domestic Medium Hair (medium coat) · 7 mi from Diamond Bar








Pharoah is a DMH Black kitten who is approximately 5 to 6 months old. He was surrendered to us. He likes to play, enjoys pet time, and is a very chill dude. He's a healthy and happy kitten looking for his forever family.
The adoption fee is 250.00. If you are interested in adopting this cat/kitten, please send all inquiries to pardonmeinc@yahoo.com. No phone calls please. All kittens/cats are FIV/Felv tested negative; spayed/neutered; up to date vaccines; de-wormed; microchipped with registration; flea/mite treatment application as needed.
*FOSTER HOMES NEEDED*
Read more about Pharoah
We are always looking for loving foster homes! Please contact us at pardonmeinc@yahoo.com if you would be interested in fostering. KK
- Good with kids
- Good with cats
- Good with dogs
- House-trained
25. Kiki
Adult (1 year 7 months) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar




Hi, my name is Kiki. I lived in a nice backyard with another cat for some time. The lady fed us and tried to keep us safe. We both had kittens, and she decided we deserved a better life, so she brought us to SBACC. My kittens went to a foster home, and I stayed at SBACC while I waited for a forever home. I am still a little nervous around people, but I am getting more comfortable every day. I enjoy attention and pets, and I get along well with other cats. I am very petite and pretty. I am hoping for a family or a Mom or Dad who will love and cherish me forever.
- Good with cats
- House-trained
26. Prince William
Young (3 months 11 days) · Male · Domestic Short Hair (short coat) · 23 mi from Diamond Bar



Meet Prince William! This royal little guy is super playful, goofy, and the definition of a fun-loving orange cat. He spends his days living life in the fast lane, wrestling and chasing toys with his siblings from sunrise to sunset. If there’s a crinkle ball to hunt or a feather wand to stalk, Prince William is on the case! When he’s done ruling the playroom, this affectionate boy is ready to settle down for some well-earned chin scratches and purr sessions.
Because he has so much kitten energy and loves social time, it’s recommended Prince William goes to a home with an active playmate (either one of his siblings or another resident cat) and plenty of toys to keep his clever mind busy.
27. Prince Harry
Young (3 months 11 days) · Male · Domestic Short Hair (short coat) · 23 mi from Diamond Bar



Meet Prince Harry! Prince Harry is a gentle, introverted soul who prefers life in the quiet lane. He is currently a super shy and timid kitty, but beneath that cautious exterior lies a heart made of absolute gold.
Prince Harry takes a little time to adjust to new faces, but patience is highly rewarded with this sweet boy. Once he realizes he is safe, he absolutely loves gentle pets, chin scratches, and warm cuddles, turning into a total purr machine.
His favorite confidence booster is his brother! Prince Harry loves playing and wrestling with his more outgoing siblings. Because he relies on other felines to feel brave, it’s highly recommended he finds a home with another confident, friendly resident cat (or he can be adopted with a sibling!) to help him navigate the big world and fully find his place.
28. Astrid
Young (4 months 25 days) · Female · Torbie / Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar





Hi, I’m Astrid, and I’m a sweet little girl who just needs someone willing to let me blossom at my own pace.
I’m shy and a bit skittish, but I love to play and enjoy spending time with my people. I’m more independent and may not be a lap kitty just yet, but I’ll happily be nearby keeping you company.
I’m comfortable with other cats and small dogs and would do best in a patient, quiet home without young children. Give me time, kindness, and love, and I’ll show you my sweet side.
*Note:
Read more about Astrid
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
_______________________________________________________________________
- No young kids
- Good with cats
- Good with dogs
- House-trained
29. Organa
Young (5 months 6 days) · Female · Domestic Short Hair / Mixed (short coat) · 23 mi from Diamond Bar





Hi, I’m Organa, a beautiful and unique little girl looking for my forever family!
I have the most gorgeous tabby and calico markings with beautiful touches of orange. I may be a little shy at first, but once I’m comfortable, my friendly and social personality shines through. I’m an active, curious kitten who loves to play, explore, and even climb into your lap!
I adore other cats and do well with small dogs, too. Give me a little time and patience, and I’ll show you just how special I am!
*Note:
Read more about Organa
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
_______________________________________________________________________
- No young kids
- Good with cats
- Good with dogs
- House-trained
30. Blizzard
Young (5 months 28 days) · Male · Domestic Medium Hair / Mixed (short coat) · 23 mi from Diamond Bar


*Note:
A2R kitties are all sterilized, fully vaccinated (if old enough), socialized in private homes not a cattery, they usually receive high end cat food, probiotics, & regular health care
. We also provide 30 days of Petcademy free to support transition into your new home as well as having a professional cat behavior coach on staff to support your needs. We take pride in going above and beyond in our customer and kitty service. When you adopt from us you become part of our A2R family and join a community through our social media as well. Be sure to follow us on Instagram, Facebook, Tik Tok and You Tube.
Read more about Blizzard
_______________________________________________________________________
- Good with cats
- House-trained
Why adopt an adult cat in Diamond Bar
An adult cat's personality is fully formed, so the rescue can tell you how they are with people, other pets and busy households. Many have lived in foster homes and are used to family life.
Grown cats are calmer and need less supervision than kittens, which suits people who work long hours or have young children.
Rescues with adult cats near Diamond Bar
- Act 2 RescueRiverside, CA · 9 adult cats above
- The TNR ProjectMonrovia, CA · 7 adult cats above
- Friends of the Seal Beach Animal Care CenterSeal Beach, Ca · 6 adult cats above
- Kindness2Cats IncBuena Park, CA · 2 adult cats above
- The Cat CoveLong Beach, CA · 2 adult cats above
- Helen Sanders Cat Protection and Welfare SocietySeal Beach, CA · 2 adult cats above
- United Hope for AnimalsPasadena, CA · 1 adult cat above
- Pardon... Me Inc.Chino Hills, CA · 1 adult cat above
Questions about adopting adult cats in Diamond Bar
How many adult cats are up for adoption in Diamond Bar?
As of October 29, 2026, rescues and shelters within 25 miles of Diamond Bar, California, have 515 adult cats up for adoption. The list is updated every day.
Where can I adopt an adult cat in Diamond Bar?
The rescues with the most adult cats near Diamond Bar right now are Act 2 Rescue (Riverside, CA), The TNR Project (Monrovia, CA) and Friends of the Seal Beach Animal Care Center (Seal Beach, Ca). Each cat above has the rescue's phone number and website.
Should I adopt an adult cat or a kitten?
It depends on your home. An adult cat's personality is already known and they need less supervision; kittens need more time and training but grow up with your family. The rescues can help you find the right match.
Listings are updated daily. Rescues are responsible for their own listings; a cat may have been adopted since this page was updated.