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Lost Pets Database for Costa Mesa, CA

Search lost and found pets in the Costa Mesa area with PawBoost.

1808 lost pets in your search

Lost Male Cat last seen San Rafael Dr and Patton Way, Buena Park, CA 90620

Reported 8 months ago, updated 1 day ago

Chance Male Cat

LOST PawBoost ID: 72550964


Buena Park, CA 90620

He is 3-years-old now and has been missing since September 6th, 2025 out of Buena Park, CA in the General tract neighborhood near Valley View and La Palma Avenues. 3-year-old neutered male tabby cat. His front right leg is all white. His left front leg has all markings and a white paw. MAIN REWARD is for a safe return to owner! Please do not chase or try to capture. Just take a picture and send it to with a location. $50 cash reward offered if it is confirmed to be our cat. If you can't take a picture please report the sighting anyhow. Any positive leads can lead to a substantial reward! He could be in the General tract (by La Palma Ave between Valley View and Knott Aves) or surrounding tracts or areas/cities. Please inform any feeders/rescues or people who aren't on social media! Thank you for your help! We understand that after this length of time there is a possibility that someone took him in and has claimed ownership. Please do not disregard our plea to know his whereabouts. If you have him please do not hide this from us. We are looking for closure and although our goal is to bring him home we need to ensure he is ok and know where is he and what happened to him. There is a hefty reward for his safe return. We miss him terribly so please do the right thing and reach out to us and find it in your heart to return him. 🙏

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Lost Male Cat last seen Ridgeway Dr & Pershing Way, Buena Park, CA 90620

Reported 11 months ago, updated 1 day ago

Chance Male Cat

LOST PawBoost ID: 72229758


Buena Park, CA 90620

2-year-old gray/brown neutered male tabby. Please keep an eye out for the white front right leg!

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Lost Male Cat last seen 20th Street and Santa Ana Ave., Costa Mesa, CA 92627

Reported 4 months ago, updated 1 day ago

Frankie Male Cat

LOST PawBoost ID: 72939833


Costa Mesa, CA 92627

Black-and-white cat with a distinctive white stripe down the face, white chest, and white paws. : Male Age: 5 He is a friendly cat but may be shy and hide if approached 2 spots in his muzzle. Additional spots in his back paws

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Lost Male Cat last seen On Dolan Avenue cross street Borson or other direction Lyndora, Downey, CA 90242

Reported 5 months ago, updated 1 day ago

Stick Tail Male Cat

LOST PawBoost ID: 72852703


Downey, CA 90242

Petite Male light gray tabby cat about seven months old very affectionate & friendly. Has an extra long thin tail. Has a pink nose. Does not meow but he does pur .Please let me know if you have seen him. He's been missing since May 3rd 2026.

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Lost Male Cat last seen Del Mar Ave. Elden St., Costa Mesa, CA 92626

Reported 1 month ago, updated 1 day ago

Bruce Male Cat

LOST PawBoost ID: 73245582


Costa Mesa, CA 92626

All black with light green eyes

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Lost Male Cat last seen Gage and Greenwood Ave, Bell Gardens, CA 90201

Reported 2 months ago, updated 1 day ago

Doug Male Cat

LOST PawBoost ID: 73205320


Bell Gardens, CA 90201

Orange short hair, white chin, damaged left pupil; weighs around 20 lbs. He is also microchipped. Still missing, please be on the look out and contact immediately if seen. He is in need of medical attention and takes it as well!! Reward if found/ returned!!!

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Lost Female Cat last seen Orchard dr & Richfield Rd, Placentia, CA 92811

Reported 3 weeks ago, updated 1 day ago

Lilo Female Cat

LOST PawBoost ID: 73354383


Placentia, CA 92811

Brown with spots and light tips on ears, wearing a GPS collar

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Lost Female Dog last seen Duncan ave and beechwood, by will Roger elementary school, Lynwood, CA 90280

Reported 1 day ago

Gorda Female Dog

LOST PawBoost ID: 73419920


Lynwood, CA 90280

Female dog, white spot on her chest she currently has a small wound between the toes of her right front paw.

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Lost Male Dog last seen Los coyotes diagonal and heather ave, Long Beach, CA 90815

Reported 1 day ago

Pup Pup Male Dog

LOST PawBoost ID: 73419888


Long Beach, CA 90815

Black, brown and white

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Lost Female Dog last seen Across from Kennedy Elementary School, Compton, CA 90220

Reported 1 day ago

Jane Doe Female Dog

LOST PawBoost ID: 73419887


Compton, CA 90220

Rottweiler loos to be 1 to 2 years old

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Lost Male Dog last seen Supposedly went to a location with nurses, Long Beach, CA 90806

Reported 1 year ago, updated 1 day ago

Maka Male Dog

LOST PawBoost ID: 71811028


Long Beach, CA 90806

White husky 3 years old this month July 2025, blue eyes, pink nose.beyond friendly and always energetic. He thinks everyone and everything is his friend. 🤦🏽‍♀️

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Lost Male Cat last seen Cherry Ave and Bixby Rd, Long Beach, CA 90807

Reported 1 year ago, updated 1 day ago

Sammie Male Cat

LOST PawBoost ID: 71801597


Long Beach, CA 90807

Grey cat with white chest and white paws. He is microchipped.

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Lost Female Dog last seen Carmentia and 183rd, Cerritos, CA 90703

Reported 1 day ago

Emma Female Dog

LOST PawBoost ID: 73419458


Cerritos, CA 90703

Terrier mix

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Lost Female Cat last seen Behind Larry burgers alley, Los Angeles, CA 90731

Reported 1 year ago, updated 1 day ago

Sweetheart Female Cat

LOST PawBoost ID: 71891888


Los Angeles, CA 90731

Spayed female shy only been around and cared for by me since 9 weeks old . C xoxo

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Lost Male Cat last seen Springfield and Adams and Main, Huntington Beach, CA 92648

Reported 2 years ago, updated 2 days ago

Rusto Male Cat

LOST PawBoost ID: 70929335


Huntington Beach, CA 92648

Orange Tabby

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Lost Female Cat last seen Santa Ana Canyon, Fairmont, and Circulo Robel, Anaheim, CA 92807

Reported 3 months ago, updated 2 days ago

Rebecca Female Cat

LOST PawBoost ID: 73104434


Anaheim, CA 92807

Dark brown, fluffy tail, approximately 9-10 months old. Please call me if you happen to find her or see her.. Thank you!

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Lost Female Cat last seen Hidden Hills rd and Monticello, Laguna Niguel, CA 92677

Reported 1 week ago, updated 2 days ago

Miss Kitten Female Cat

LOST PawBoost ID: 73389617


Laguna Niguel, CA 92677

Shy Small Siamese spayed 1yr old light colored female cat

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Lost Female Cat last seen Near sudene and Raymond, Fullerton, CA 92831

Reported 4 days ago, updated 2 days ago

Sage Female Cat

LOST PawBoost ID: 73408005


Fullerton, CA 92831

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Lost Male Dog last seen Anahiem, Anaheim, CA 92805

Reported 2 days ago, updated 2 days ago

Haichi Male Dog

LOST PawBoost ID: 73418755


Anaheim, CA 92805

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Lost Male Dog last seen Hinnen y gale, La Puente, CA 91745

Reported 2 days ago

Goss Male Dog

LOST PawBoost ID: 73418764


La Puente, CA 91745

s muy nervioso

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Lost Pet Data for Costa Mesa, CA

There are 1808 lost pets in Costa Mesa, CA.

Find Local Pet Shelters in Costa Mesa, CA

PawBoost has communities of pet-lovers across the country and beyond that help find missing pets, and that means partnerships with pet shelters in the US and in Canada.

Are you a team member at a shelter not yet partnered with PawBoost?

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Find Your Pet Sooner with PawBoost

When you have a missing pet, it can be difficult to know what to do in the moment.

How do I find my pet? Do I have to visit the pet shelters in my area in person, or is it okay to just call? How can I get the word out to my local community in Costa Mesa?

With our free tools and premium add-on services, PawBoost helps lost pet owners find their furry loved ones – 2,315,171 pets reunited and counting!

Find your lost pet faster with PawBoost.

Report Lost Pet

Frequently Asked Questions

I lost my pet. What should I do?

Take advantage of online platforms – they help you get the word out, quickly and easily. You can report your lost pet to PawBoost in no time flat. We'll send an email alert to our local members, post to the PawBoost-powered Facebook page for your area, add your pet to our lost & found, and make a lost pet flyer – all for free.

Other sites that help you raise local awareness for your lost pet with minimal time and effort are Nextdoor.com – a PawBoost partner – and Craigslist. Both of these sites have very active lost & found sections mainly used for lost pets. We highly recommend you use these resources in addition to PawBoost!

Visit your local shelters and animal control agencies in person. Details can get lost in translation over the phone and that might lead to missed connection.

If chipped, make sure your pet's microchip is registered and up to date. If you don't know your pet's chip manufacturer or number, your vet should be able to help locate this information.

Put up flyers and tell your neighbors to be on the lookout. The more you engage the Costa Mesa community, the better your chances of a happy reunion!

Read our full guide on how to find your lost pet for more actionable tips.

Where do I report a lost pet in Costa Mesa, CA?

If you lost a pet, we would like to help. You can report a lost pet to PawBoost for free to help find your pet in the Costa Mesa area. Millions of pet lovers have signed up for our local lost & found pet alerts, and that includes pet lovers near Costa Mesa!

Do I have to pay for premium PawBoost services to find my lost pet?

You don't have to pay to find your lost pet with PawBoost. PawBoost's free pet finder services have helped millions of people reunite with their lost pets.

PawBoost does offer premium upgrades to help increase the reach of your lost pet alert.

You can learn more about what free and premium services PawBoost offers here.