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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.

1095 lost cats in your search

Lost Male Cat last seen Etiwanda ave between Arrow & Foothill at Victoria Woods apts, Rancho Cucamonga, CA 91739

Reported 2 months ago, updated 4 days ago

Snoopy Male Cat

LOST PawBoost ID: 72920622


Rancho Cucamonga, CA 91739

Siamese cat

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Lost Male Cat last seen Montelago neighborhood, Fontana, CA 92337

Reported 4 weeks ago, updated 4 days ago

Tigger Male Cat

LOST PawBoost ID: 73056537


Fontana, CA 92337

He's a friendly cat, hes and orange tabby cat with a black collar, with a blue silicone airtag holder that was removed from his collar & left on sidewalk. Has a blue collar with his name & my contact info

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Lost Male Cat last seen On the Corner of W Flora St and N Oaks Ave, Ontario, CA 91762

Reported 4 days ago

Gordito Male Cat

LOST PawBoost ID: 73151749


Ontario, CA 91762

All grey short haired has a white patch on his neck and stomach area back right legs has a little white on his tippy toes

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Lost Female Cat last seen N Morada Ave, Covina, CA 91722

Reported 1 year ago, updated 4 days ago

Furi Female Cat

LOST PawBoost ID: 71793012


Covina, CA 91722

Female, Calico, spayed, microchipped and timid. She should be wearing a light green/blue collar.

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Lost Female Cat last seen E Culver and S Olive, Orange, CA 92866

Reported 2 months ago, updated 4 days ago

Sammie Female Cat

LOST PawBoost ID: 72931266


Orange, CA 92866

Tabby female cat, under belly area recently shaved from her last vet visit. She is an outdoor cat I have been caring for the past year. She is usually in my drive way and I am a back home. She didn’t show up for breakfast or dinner tonight.

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Lost Male Cat last seen Mission and Hamilton, Pomona, CA 91766

Reported 2 months ago, updated 4 days ago

Luna Male Cat

LOST PawBoost ID: 72960310


Pomona, CA 91766

White cat golden brown stripes all over his face, he has blue eyes and golden brown raccoon striped tail and he is not nurtured

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Lost Male Cat last seen Veterans park, Chino Hills, CA 91710

Reported 1 year ago, updated 4 days ago

Stinky Male Cat

LOST PawBoost ID: 71502193


Chino Hills, CA 91710

Tabby Cat with a white patch of fur down his chest One of his front paws has a half brown and half pink paw color

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Lost Female Cat last seen Reno and Hermosa, Temple City, CA 91780

Reported 8 months ago, updated 4 days ago

Panda Female Cat

LOST PawBoost ID: 72270585


Temple City, CA 91780

She is a fluffy tuxedo cat with a blue Velcro collar. She looks like Sylvester the cat with her markings. She has 2 short socks in the front and 2 long socks for her hind legs. She has a white underside. She has green eyes. She is fixed and microchipped.

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Lost Male Cat last seen Dorothea Road and Cypress Street, La Habra Heights, CA 90631

Reported 2 months ago, updated 4 days ago

Tigger Male Cat

LOST PawBoost ID: 72953574


La Habra Heights, CA 90631

Orange/Rust colored shorthair with very long tail and cream stripes/swirls

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Lost Male Cat last seen Near mona bell ct riverside ca 92504, Riverside, CA 92504

Reported 2 weeks ago, updated 4 days ago

Anakin Male Cat

LOST PawBoost ID: 73120247


Riverside, CA 92504

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Lost Male Cat last seen Miller Ave and Almeria ave, Fontana, CA 92336

Reported 4 weeks ago, updated 4 days ago

Herkules Male Cat

LOST PawBoost ID: 73053097


Fontana, CA 92336

Orange and white striped Tabby

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Lost Male Cat last seen Orangewood/Della Lane, Anaheim, CA 92802

Reported 2 months ago, updated 4 days ago

Shadow Male Cat

LOST PawBoost ID: 72854142


Anaheim, CA 92802

Black with light reddish. Slightly long hair on him butt.

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Lost Male Cat last seen Ball rd and Sunkist, Anaheim, CA 92806

Reported 1 year ago, updated 4 days ago

Poo Bear Male Cat

LOST PawBoost ID: 71345887


Anaheim, CA 92806

Light orange and white fixed male.

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Lost Female Cat last seen Alhambra st., Norco, CA 92860

Reported 3 weeks ago, updated 4 days ago

Tofu Female Cat

LOST PawBoost ID: 73062394


Norco, CA 92860

Nearby cross streets: Cedar Ave., Acacia Ave., and Hamner Ave.

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Lost Female Cat last seen Howellhurst, West Covina, CA 91790

Reported 5 months ago, updated 4 days ago

Winona Female Cat

LOST PawBoost ID: 72549734


West Covina, CA 91790

Tuxedo cat white paws

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Lost Male Cat last seen Near S Rustic Ln, Anaheim, CA 92804

Reported 12 months ago, updated 4 days ago

Matcha Male Cat

LOST PawBoost ID: 71877482


Anaheim, CA 92804

He is a big cat, blue golden color.

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Lost Male Cat last seen Marshalls's plaza South El Monte, South El Monte, CA 91733

Reported 6 months ago, updated 4 days ago

Medo Male Cat

LOST PawBoost ID: 72472427


South El Monte, CA 91733

He so lovely and friendly. Around 10 months but looks bigger than that

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Lost Female Cat last seen Grier St & Westmont Ave, Westmont park area, Pomona, CA 91799

Reported 7 days ago, updated 4 days ago

Mika Female Cat

LOST PawBoost ID: 73141340


Pomona, CA 91799

Female black cat with green eyes, ~3-4yrs old, boyish looking, very shy. May or may not have on black collar with silver moons and stars

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

Reported 5 months ago, updated 4 days ago

CHANCE Male Cat

LOST PawBoost ID: 72550964


Buena Park, CA 90620

$50 REWARD for a CONFIRMED SIGHTING WITH LOCATION. 2-year-old neutered male tabby cat. His front right leg is all white. His left front leg has all markings and a white paw. Please do not chase or try to capture. Just take a picture and send it to with a location. $50 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! 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 Desire, Rowland Heights, CA 91748

Reported 3 weeks ago, updated 5 days ago

Bello Male Cat

LOST PawBoost ID: 73084129


Rowland Heights, CA 91748

Tuxedo Cat. Black/ White. Right ear clipped. He respons to his name Bello

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Lost Cat Data for Ontario, CA

There are 1095 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 – 2,268,419 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.