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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.

879 lost cats in your search

Lost Male Cat last seen Spring Mountain Ranch, Riverside, CA 92507

Reported 11 months ago, updated 5 days ago

Binx Male Cat

LOST PawBoost ID: 72254259


Riverside, CA 92507

Black with 3 white spots on neck, chest, groin.

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Lost Female Cat last seen Montefino community, Diamond Bar, CA 91765

Reported 6 days ago

Taco Female Cat

LOST PawBoost ID: 73509041


Diamond Bar, CA 91765

All black, yellow-green eyes, female American short-hair, weighted around 14 pound. No collar.

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

Reported 5 months ago, updated 6 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 Harrison Ave, Eastvale, CA 92880

Reported 6 days ago

Nunu Male Cat

LOST PawBoost ID: 73508802


Eastvale, CA 92880

American shorthair

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Lost Male Cat last seen Miramonte dr, San Bernardino, CA 92405

Reported 3 weeks ago, updated 6 days ago

Onxy Male Cat

LOST PawBoost ID: 73449570


San Bernardino, CA 92405

Black long hair with blue collar

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Lost Male Cat last seen Citrus and rosemary drive, Fontana, CA 92335

Reported 6 days ago

Whiskers Male Cat

LOST PawBoost ID: 73508513


Fontana, CA 92335

White and grey with blue eyes

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Lost Male Cat last seen Monterey st, Pomona by the Pomona Adult Daycare Center, Pomona, CA 91767

Reported 1 year ago, updated 6 days ago

Catnip Male Cat

LOST PawBoost ID: 71844968


Pomona, CA 91767

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Lost Male Cat last seen Monterey, Pomona, CA 91767

Reported 1 year ago, updated 6 days ago

Catnip Male Cat

LOST PawBoost ID: 71692291


Pomona, CA 91767

On his right hind leg is a black spot, and also he has some dwarfism.

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Lost Male Cat last seen Cindee Lane, Colton, CA 92324

Reported 2 weeks ago, updated 6 days ago

Alex Male Cat

LOST PawBoost ID: 73474955


Colton, CA 92324

Neutered. Quiet. Comfortable with outdoor and indoor. Chest nut long haired Tabby. Goldish brown and fluffy hair. Playful and cuddly. Likes meow mix Pate.

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

Reported 2 years ago, updated 6 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 Male Cat last seen Jurupa Ave. /pacific Ave., Fontana, CA 92337

Reported 2 months ago, updated 6 days ago

Coco Male Cat

LOST PawBoost ID: 73302669


Fontana, CA 92337

White with gray but mainly white his tail it’s grey with like white stripes heavier he is super big he is 2 years and 5 months but super long and heavy like around 20 pounds his is super scared of anything or anyone he is super shy but really lovable he loves to eat and he enjoys playing with anything that is like a stick.. his nick name is (goigoo) Jurupa Ave, and Paciffic Ave last seen 08/16/26

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Lost Female Cat last seen Mabury Ranch, Bryce Ave and Zion, Orange, CA 92867

Reported 2 months ago, updated 6 days ago

Daisy Female Cat

LOST PawBoost ID: 73271441


Orange, CA 92867

Black cat

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Lost Male Cat last seen Raymond & Commonwealth, Fullerton, CA 92831

Reported 1 week ago, updated 6 days ago

Cheez It Male Cat

LOST PawBoost ID: 73498110


Fullerton, CA 92831

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Lost Female Cat last seen Waters Ave, Pomona, CA 91766

Reported 4 months ago, updated 6 days ago

Ember Female Cat

LOST PawBoost ID: 73082842


Pomona, CA 91766

Tortoiseshell cat with fluffy fur and kind of small for a cat; weighs around 9 pounds and is almost 2 years old.

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

Reported 9 months ago, updated 6 days ago

Milo Male Cat

LOST PawBoost ID: 72442347


Glendora, CA 91741

Black and white male cat short haired

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Lost Male Cat last seen Rouner drive, Jurupa Valley, CA 92509

Reported 2 weeks ago, updated 6 days ago

Gary Male Cat

LOST PawBoost ID: 73475864


Jurupa Valley, CA 92509

White with Grey intacted

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

Reported 7 months ago, updated 6 days ago

Snuggles Female Cat

LOST PawBoost ID: 72669598


Monrovia, CA 91016

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

Reported 2 months ago, updated 6 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 Arlington, Riverside, CA 92505

Reported 3 weeks ago, updated 6 days ago

Simba Male Cat

LOST PawBoost ID: 73436839


Riverside, CA 92505

Medium/short hair length

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Lost Male Cat last seen Schmidt rd, El Monte, CA 91732

Reported 6 months ago, updated 6 days ago

Bruce Male Cat

LOST PawBoost ID: 72766094


El Monte, CA 91732

Hea a big cat with white in his ears and his chest he has two white toes on his right foot a little scar on his ear and green eyes

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Lost Cat Data for Ontario, CA

There are 879 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 – 2,334,140 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.