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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.

940 lost cats in your search

Lost Female Cat last seen Alderton, La Puente, CA 91744

Reported 7 days ago

Amari ‘’mama” Female Cat

LOST PawBoost ID: 73144102


La Puente, CA 91744

Brown tabby M on top forehead

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Lost Male Cat last seen K, Colton, CA 92324

Reported 3 weeks ago, updated 7 days ago

Jiji Male Cat

LOST PawBoost ID: 73078310


Colton, CA 92324

Black cat white mark on left paw

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Lost Female Cat last seen Orange ave and Barton rd, Redlands, CA 92373

Reported 2 months ago, updated 7 days ago

Kaos Female Cat

LOST PawBoost ID: 72944240


Redlands, CA 92373

Tabby gray black stripes orange spot on forehead

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Lost Male Cat last seen Boulder and San Antonio, Ontario, CA 91762

Reported 1 week ago, updated 7 days ago

Ollie Male Cat

LOST PawBoost ID: 73134214


Ontario, CA 91762

Gray and White

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Lost Female Cat last seen Encanto Pkwy and Hacienda, Duarte, CA 91010

Reported 3 months ago, updated 7 days ago

Ripley Female Cat

LOST PawBoost ID: 72757466


Duarte, CA 91010

Gray and white with collar. Young, about 8lbs.

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Lost Male Cat last seen sante fe placentia, Placentia, CA 92870

Reported 2 weeks ago, updated 7 days ago

Schmiggles Male Cat

LOST PawBoost ID: 73102488


Placentia, CA 92870

bk/ white cat, He has 2 dots on his nose, one on each side, and extra toes. Medium/long hair and a fluffy tail.

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Lost Male Cat last seen N Rick St and Bond St, Orange, CA 92869

Reported 1 week ago, updated 7 days ago

Bean Male Cat

LOST PawBoost ID: 73134022


Orange, CA 92869

Has distinctive circles like the letter O on his sides. He is chipped and neutered, very gentle and always comes to calling "Bean Bean"

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Lost Female Cat last seen Near Green River Road, Corona, CA 92882

Reported 6 months ago, updated 7 days ago

Venus Female Cat

LOST PawBoost ID: 72514340


Corona, CA 92882

Calico female cat

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Lost Male Cat last seen Forman st and 25th st, Upland, CA 91784

Reported 4 months ago, updated 7 days ago

Grimm Male Cat

LOST PawBoost ID: 72728516


Upland, CA 91784

6 month old short haired black and white tuxedo with distinct white chin

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Lost Male Cat last seen South hills country club, West Covina, CA 91791

Reported 3 years ago, updated 7 days ago

Stapes Male Cat

LOST PawBoost ID: 69545645


West Covina, CA 91791

Tabby cat

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Lost Female Cat last seen Chapman and Calle grande, Orange, CA 92866

Reported 2 months ago, updated 7 days ago

Gracie Female Cat

LOST PawBoost ID: 72930459


Orange, CA 92866

8 year old Tabby mix

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Lost Male Cat last seen By La Sierra Park Area, Riverside, CA 92505

Reported 3 weeks ago, updated 7 days ago

Bean Male Cat

LOST PawBoost ID: 73063543


Riverside, CA 92505

Black tuxedo with a white mustache on one side only, black chin, black legs and white paws with black spots.

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Lost Male Cat last seen Overlook Ridge Road and Highland Valley in Diamond Bar, Diamond Bar, CA 91765

Reported 1 month ago, updated 7 days ago

Bootsy Male Cat

LOST PawBoost ID: 73006756


Diamond Bar, CA 91765

Feral Tuxedo cat with ear tipped

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Lost Male Cat last seen Oakway Ave & Ghentt, San Dimas, CA 91773

Reported 7 months ago, updated 1 week ago

Amber Male Cat

LOST PawBoost ID: 72344141


San Dimas, CA 91773

White with a few tan markings; right ear clipped; brown eyes; indoor/outdoor cat

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Lost Female Cat last seen Cloud haven dr, Moreno Valley, CA 92557

Reported 6 months ago, updated 1 week ago

Mama Female Cat

LOST PawBoost ID: 72519849


Moreno Valley, CA 92557

Female, not spayed or micro-chipped. She is a grey, black, white tabby. Very skittish of people she doesn't know. Has a sweet sounding meow. I miss her so badly, please help me find her!

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Lost Male Cat last seen Old Castle Rd and Dune, Fontana, CA 92337

Reported 4 years ago, updated 1 week ago

Mochi Male Cat

LOST PawBoost ID: 68057257


Fontana, CA 92337

Orange cat wearing a bell collar, 2 years old

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Lost Female Cat last seen El Camino Pl, Fontana, CA, Fontana, CA 92337

Reported 4 months ago, updated 1 week ago

Phoebe Female Cat

LOST PawBoost ID: 72646982


Fontana, CA 92337

Small and orange with a fluffy tail and white belly. Yellowish eyes

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Lost Female Cat last seen Ontario: Philadelphia between grove and vineyard, Ontario, CA 91761

Reported 4 weeks ago, updated 1 week ago

Binx Female Cat

LOST PawBoost ID: 73062092


Ontario, CA 91761

Gray tabby with distinct striping pattern. White chest and feet and unique markings in white area around her mouth. One of her elbows also has a white stripe. She’s two years old but very small.

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Lost Male Cat last seen Avalon st, newton st, jurupa valley, Jurupa Valley, CA 92509

Reported 3 weeks ago, updated 1 week ago

Pumpkin Male Cat

LOST PawBoost ID: 73084245


Jurupa Valley, CA 92509

Orange shorthair tabby cat

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Lost Female Cat last seen Whitney/garey, La Verne, CA 91750

Reported 2 weeks ago, updated 1 week ago

Pistacho Female Cat

LOST PawBoost ID: 73110374


La Verne, CA 91750

Small bump under her eye

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Lost Cat Data for Ontario, CA

There are 940 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 – 2,268,892 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.