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Lost Cats Database for Ontario, CA

Search lost and found cats, as well as other pets, in the Ontario area with PawBoost.

884 lost cats in your search

Lost Male Cat last seen Garfield St & Adam’s Ave, Riverside, CA 92504

Reported 2 days ago

Charles Male Cat

LOST PawBoost ID: 73419529


Riverside, CA 92504

Brown/gray tabby with white chest, belly & paws. Green eyes, pink nose. EXTRA TOES on all four paws (polydactyl). Neutered male. Very friendly and cuddly.

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Lost Female Cat last seen Rennassance parkway and Ayala Rialto ca, San Bernardino, CA 92408

Reported 2 weeks ago, updated 2 days ago

Monkey-cheechee Female Cat

LOST PawBoost ID: 73369972


San Bernardino, CA 92408

2cats sisters MaineCoon tortioushell calico 1 fluffy 1 thick fur w stripes both peach tones green eyes female vocal

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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 Male Cat last seen E Virginia and crestview Glendora, Glendora, CA 91741

Reported 9 months ago, updated 2 days ago

Milo Male Cat

LOST PawBoost ID: 72442347


Glendora, CA 91741

Black and white male cat short haired

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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 Female Cat last seen Grace, Riverside, CA 92504

Reported 2 days ago

Frosty Female Cat

LOST PawBoost ID: 73418824


Riverside, CA 92504

Siamese mix with seal point color

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Lost Male Cat last seen Near etiwanda rd rancho Cucamonga, Rancho Cucamonga, CA 91739

Reported 2 months ago, updated 2 days ago

Bean Beans Male Cat

LOST PawBoost ID: 73189658


Rancho Cucamonga, CA 91739

Male, grey and black tabby with white paws, 3 years old, neutered,family friendly,very smart, 4 small black strips above green/blueish eyes white paw

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Lost Male Cat last seen Windstone Way, Clark St, Cajalco Rd, Perris, CA 92570

Reported 2 years ago, updated 2 days ago

Bon Bon Male Cat

LOST PawBoost ID: 71374939


Perris, CA 92570

Skittish, green eyes, neutered male, has a microchip, weighs 13 pounds, tip of his tail is black.

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Lost Female Cat last seen Glendora Ave and foothill, Monrovia, CA 91016

Reported 6 months ago, updated 2 days ago

Snuggles Female Cat

LOST PawBoost ID: 72669598


Monrovia, CA 91016

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Lost Male Cat last seen Ball Rd and State College Anaheim, Anaheim, CA 92805

Reported 5 days ago, updated 2 days ago

Biggie Smalls Male Cat

LOST PawBoost ID: 73405937


Anaheim, CA 92805

All grey Russian Blue/ green eyes

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Lost Male Cat last seen Suncrest and running deer, Moreno Valley, CA 92553

Reported 2 days ago

Bear Male Cat

LOST PawBoost ID: 73418070


Moreno Valley, CA 92553

All black yellow green eyes blue collar with tag un neutered about 2

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Lost Male Cat last seen N Parkside dr. And Dst, Ontario, CA 91764

Reported 1 week ago, updated 2 days ago

Auto Zone Male Cat

LOST PawBoost ID: 73397495


Ontario, CA 91764

All black

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Lost Female Cat last seen HASTER AND ORANGEWOOD IN ANAHEIM, Anaheim, CA 92815

Reported 5 months ago, updated 2 days ago

Unknown Female Cat

LOST PawBoost ID: 72854153


Anaheim, CA 92815

COLLAR CHECKERBOARD > LIGHT GREEN WITH WHITE.

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Lost Male Cat last seen Rio vista elementary, Anaheim, CA 92806

Reported 2 days ago

Smoky Male Cat

LOST PawBoost ID: 73417988


Anaheim, CA 92806

He’s a light grey and cream tabby cat very friendly he’s not neutered

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Lost Male Cat last seen Via lomas de Yorba east/la Palma, Yorba Linda, CA 92887

Reported 3 weeks ago, updated 2 days ago

Cooper Male Cat

LOST PawBoost ID: 73334093


Yorba Linda, CA 92887

Black with green eyes

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Lost Male Cat last seen Brookhollow circle jurupa valley at the bear forest products, Riverside, CA 92509

Reported 2 months ago, updated 2 days ago

Handsome boy Male Cat

LOST PawBoost ID: 73244581


Riverside, CA 92509

He’s sick has green mucus at times he’s very skinny but he’s orange and white may be even dirtier from being out there

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Lost Female Cat last seen N Wanda Road & E Collins Avenue, Villa Park, CA 92861

Reported 3 weeks ago, updated 2 days ago

Sweet Caroline Female Cat

LOST PawBoost ID: 73333783


Villa Park, CA 92861

Dilute Calico

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Lost Male Cat last seen 8th and Camino Real, Arcadia, Arcadia, CA 91006

Reported 4 weeks ago, updated 2 days ago

Obie-cat Male Cat

LOST PawBoost ID: 73323821


Arcadia, CA 91006

Brown tabby, no white markings

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Lost Male Cat last seen sunset crossing & north del sol by diamond point elementary, Diamond Bar, CA 91765

Reported 2 weeks ago, updated 2 days ago

Wispy Male Cat

LOST PawBoost ID: 73380553


Diamond Bar, CA 91765

black cat with green eyes

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Lost Male Cat last seen West La Cadena, Riverside, CA 92501

Reported 2 days ago

Smithers Male Cat

LOST PawBoost ID: 73417776


Riverside, CA 92501

Red collar

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Lost Cat Data for Ontario, CA

There are 884 lost cats in Ontario, CA.

Find Local Cat Shelters in Ontario, CA

PawBoost has communities of cat-lovers across the country and beyond that help find missing cats, and that means partnerships with cat 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 Cat Sooner with PawBoost

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

How do I find my cat? Do I have to visit the cat 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 Ontario?

With our free tools and premium add-on services, PawBoost helps lost cat owners find their furry loved ones – 2,315,233 pets reunited and counting!

Find your lost cat faster with PawBoost.

Report Lost Cat

Frequently Asked Questions

I lost my cat. What should I do?

Take advantage of online platforms – they help you get the word out, quickly and easily. You can report your lost cat 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 cat to our lost & found, and make a lost cat flyer – all for free.

Other sites that help you raise local awareness for your lost cat 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 cat'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 Ontario community, the better your chances of a happy reunion!

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

Where do I report a lost cat in Ontario, CA?

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

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

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

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.