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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 Female Cat last seen Bonita ave, Pomona, CA 91799

Reported 1 month ago, updated 3 weeks ago

Honey Female Cat

LOST PawBoost ID: 73251437


Pomona, CA 91799

Orange, whit, black calico

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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 3 weeks ago

Copper Male Cat

LOST PawBoost ID: 73334098


Yorba Linda, CA 92887

Black with green eyes

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Lost Unknown Cat last seen Santa Ana and Slover, Fontana, CA 92337

Reported 2 months ago, updated 3 weeks ago

Avatar Unknown Cat

LOST PawBoost ID: 73191369


Fontana, CA 92337

Lost cat

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Lost Female Cat last seen Russell and bogardus, Whittier, CA 90603

Reported 3 weeks ago, updated 3 weeks ago

Beyonce Female Cat

LOST PawBoost ID: 73338994


Whittier, CA 90603

Black female cat, 13 years old. Microchipped

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Lost Female Cat last seen Cristalino st and montellano st, Hacienda Heights, CA 91745

Reported 2 months ago, updated 3 weeks ago

Nala Female Cat

LOST PawBoost ID: 73240677


Hacienda Heights, CA 91745

All black and some white on chest

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Lost Female Cat last seen Beach and Hillsborough, La Mirada, CA 90638

Reported 3 weeks ago

Dalkom Female Cat

LOST PawBoost ID: 73350663


La Mirada, CA 90638

17lbs. White and brown

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Lost Female Cat last seen Near west service ave, West Covina, CA 91790

Reported 1 month ago, updated 3 weeks ago

Molly Female Cat

LOST PawBoost ID: 73255073


West Covina, CA 91790

She’s a tuxedo has a circle on each paw looks like shes wearing a mask. She’s super sweet. She’s also microchipped

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Lost Female Cat last seen Am pm, San Dimas, CA 91773

Reported 4 weeks ago, updated 3 weeks ago

Rachi Female Cat

LOST PawBoost ID: 73311170


San Dimas, CA 91773

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Lost Female Cat last seen Blackwood St in between echelon and greycliff, La Puente, CA 91744

Reported 2 months ago, updated 3 weeks ago

Quasi Female Cat

LOST PawBoost ID: 73189659


La Puente, CA 91744

Diluted calico with tabby markings, 4 years old, unspayed

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Lost Male Cat last seen Sky country, Mira Loma market ,, Jurupa Valley, CA 91752

Reported 3 weeks ago

John/ Boba Male Cat

LOST PawBoost ID: 73349059


Jurupa Valley, CA 91752

Greenish eyes, whiskers are white from the bottom and black to the tip

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Lost Female Cat last seen Butterfield Rd & Jess St, Pomona, CA 91766

Reported 3 months ago, updated 3 weeks ago

Kitty Female Cat

LOST PawBoost ID: 73031801


Pomona, CA 91766

She is around 10 and is inside/outside cat. She is super friendly and does get scared with loud noises. She also loves to hides.

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Lost Female Cat last seen Naresh and Lincoln, Pomona, CA 91767

Reported 3 weeks ago

Mary Female Cat

LOST PawBoost ID: 73348086


Pomona, CA 91767

Beating, overweight, lil red nose

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Lost Male Cat last seen La Palma and Via Lomas de Yorba, Yorba Linda, CA 92887

Reported 3 weeks ago, updated 3 weeks ago

Cooper Male Cat

LOST PawBoost ID: 73340106


Yorba Linda, CA 92887

All black

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

Reported 1 year ago, updated 3 weeks 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 eddd, Riverside, CA 92509

Reported 4 weeks ago, updated 3 weeks ago

Espeon Female Cat

LOST PawBoost ID: 73310923


Riverside, CA 92509

has orange patches on chest and lil bit on the left side of eye

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

Reported 4 months ago, updated 3 weeks 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 Female Cat last seen Franklin Court San Bernardino Ca, San Bernardino, CA 92408

Reported 1 year ago, updated 3 weeks ago

Chloe Female Cat

LOST PawBoost ID: 72043350


San Bernardino, CA 92408

Tabby (senior)

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Lost Female Cat last seen Ridgeway, Pomona, CA 91768

Reported 3 weeks ago

Bullet Female Cat

LOST PawBoost ID: 73346682


Pomona, CA 91768

Black And White Short Hair

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Lost Female Cat last seen Princess Palm & Sago Palm, West Covina, CA 91790

Reported 3 weeks ago, updated 3 weeks ago

Katy Female Cat

LOST PawBoost ID: 73338415


West Covina, CA 91790

Mix of colors, white, gray, black w white front paws & last ear is down due to an injury

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Lost Female Cat last seen huntergs ridge park, Fontana, CA 92336

Reported 3 weeks ago

Beatrix/Bea Female Cat

LOST PawBoost ID: 73345961


Fontana, CA 92336

Black small kitten with white socks on each foot and a small white patch on her chest, she has a lot of whiskers and will most likely come up to you if you are patient, she is very friendly

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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 – 2,315,330 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.