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Lost Pets Database for Costa Mesa, CA

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

1702 lost pets in your search

Lost Male Dog last seen near progress park, Paramount, CA 90723

Reported 1 week ago

Copper Male Dog

LOST PawBoost ID: 73590282


Paramount, CA 90723

Brown, white, black beagle Has big ears

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

Reported 2 months ago, updated 1 week ago

Chance - 9/6/25 Male Cat

LOST PawBoost ID: 73328479


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! 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!

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Lost Male Cat last seen Peyton Drive and Grand Avenue,, Chino Hills, CA 91709

Reported 1 week ago, updated 1 week ago

Tito Male Cat

LOST PawBoost ID: 73581926


Chino Hills, CA 91709

Tuxedo cat Left leg white like a cast Black nose Plade collar with bow paws have some black specks

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Lost Male Cat last seen The Block, Garden Grove, CA 92843

Reported 2 years ago, updated 1 week ago

Sun Male Cat

LOST PawBoost ID: 71526886


Garden Grove, CA 92843

Long hair orange cat, neutered. Tip of front paws are white back legs are white. A puffy tail like a squirrel. Born late June 2019. No collar or nor chip. He's timid but vocal. Name: Sun Location: Garden Grove/Fairview St.

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Lost Male Cat last seen Milan and Lowell, Westminster, CA 92683

Reported 1 week ago

Bo Male Cat

LOST PawBoost ID: 73590209


Westminster, CA 92683

White and grey male ragdoll with blue eyes and is about 2 years old.

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Lost Male Cat last seen Rogers garden, Newport Beach, CA 92660

Reported 1 month ago, updated 1 week ago

Meechi Male Cat

LOST PawBoost ID: 73445113


Newport Beach, CA 92660

White fluffy big boy he haw orange white streaks all over his fur with bright blue eyes and

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Lost Male Dog last seen Compton blvd and harris, Compton, CA 90221

Reported 1 week ago, updated 1 week ago

Rocco Male Dog

LOST PawBoost ID: 73581584


Compton, CA 90221

Brow with black and black mouth

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Lost Male Cat last seen Manchester and lincoln, Anaheim, CA 92802

Reported 1 week ago, updated 1 week ago

Kitty Kitty Male Cat

LOST PawBoost ID: 73581719


Anaheim, CA 92802

Black with small white spot on neck and back paws.

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Lost Male Cat last seen Castilian-Colima (my patio), Huntington Beach, CA 92646

Reported 3 months ago, updated 1 week ago

Loki Male Cat

LOST PawBoost ID: 73233671


Huntington Beach, CA 92646

Striped and wears a violet cat collar

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Lost Female Cat last seen Near Acacia Ave, Garden Grove, CA 92841, Garden Grove, CA 92841

Reported 1 year ago, updated 1 week ago

Sasha Female Cat

LOST PawBoost ID: 72039617


Garden Grove, CA 92841

Black Russian-dark grey

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Lost Female Dog last seen La cuarta, Whittier, CA 90602

Reported 1 week ago

Sophie Female Dog

LOST PawBoost ID: 73589956


Whittier, CA 90602

Shes old now has arthritis and is semi blind thats how she got lost

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Lost Female Dog last seen Jordan High School, Long Beach, CA 90805

Reported 2 weeks ago, updated 1 week ago

Luna Female Dog

LOST PawBoost ID: 73555422


Long Beach, CA 90805

Reddish poodle mix with high energy

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Lost Male Cat last seen Right in front of my hse, Laguna Niguel, CA 92677

Reported 1 week ago

Benimaru/Benny Male Cat

LOST PawBoost ID: 73589802


Laguna Niguel, CA 92677

Orange and white short hair

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Lost Female Dog last seen Milton, Whittier, CA 90602

Reported 1 week ago

Sophie Female Dog

LOST PawBoost ID: 73589795


Whittier, CA 90602

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Lost Male Cat last seen Near w 227th st, Torrance, CA 90501

Reported 1 week ago

Billy Male Cat

LOST PawBoost ID: 73589786


Torrance, CA 90501

Black and white tuxedo cat with a distinguishable black spot on his chin

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Lost Male Dog last seen Jack in the box Telegraph road Whittier ca, Whittier, CA 90605

Reported 4 weeks ago, updated 1 week ago

Cotton Male Dog

LOST PawBoost ID: 73507183


Whittier, CA 90605

Wearing red collar has brown spots on tummy ears tips and patch on his back that are grey

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Lost Female Dog last seen Milton, Whittier, CA 90602

Reported 11 months ago, updated 1 week ago

Sophie Female Dog

LOST PawBoost ID: 72388631


Whittier, CA 90602

She’s old with grey and white fur. Shes wearing a black and white Christmas sweater.

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Lost Male Dog last seen Harbor Blvd. & Garden Grove Blvd., Garden Grove, CA 92840

Reported 1 month ago, updated 1 week ago

Almond Male Dog

LOST PawBoost ID: 73485525


Garden Grove, CA 92840

Chihuahua Sh/Mi Brown. Not wearing collar but is microchipped.

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Lost Male Dog last seen Oak Tree Downs neighborhood, Chino Hills, CA 91709

Reported 1 week ago

Ollie Male Dog

LOST PawBoost ID: 73589499


Chino Hills, CA 91709

Gray mini schnauzer, no collar, docked tail

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Lost Male Cat last seen Trask Ave and Fairview, Garden Grove, CA 92843

Reported 2 weeks ago, updated 1 week ago

Nibbler Male Cat

LOST PawBoost ID: 73575839


Garden Grove, CA 92843

Orange and white domestic short hair

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Lost Pet Data for Costa Mesa, CA

There are 1702 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?

Request Shelter Partnership

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 – 2,350,963 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.