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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.

839 lost cats in your search

Lost Female Cat last seen Arrow and Silverwood, Upland, CA 91786

Reported 3 days ago

Luna Female Cat

LOST PawBoost ID: 73608896


Upland, CA 91786

1 year old small gray with black stripes slight orange belly

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Lost Male Cat last seen Summit parking lot behind Aldi near Wendy's, Fontana, CA 92336

Reported 4 years ago, updated 3 days ago

Porthos Male Cat

LOST PawBoost ID: 68265403


Fontana, CA 92336

Black and white unaltered male very sweet but timid he is a emotional support cat and who accidentally jumped out when spooked very worried please call if spotted probably won't be able to catch but if able definitely will be appreciated

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Lost Male Cat last seen Bennett Ave, Masters Drive, Corona, CA 92883

Reported 3 months ago, updated 3 days ago

Miso Male Cat

LOST PawBoost ID: 73285826


Corona, CA 92883

Mostly Black on his back and mostly white on his chest

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Lost Female Cat last seen Near E Mice St, West Covina, CA 91790

Reported 8 months ago, updated 3 days ago

Amy Female Cat

LOST PawBoost ID: 72681587


West Covina, CA 91790

White short-haired, orange ears and tail, and blue eyes.

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Lost Male Cat last seen Near e Jackson st, Rialto, CA 92376

Reported 3 days ago

Bento Male Cat

LOST PawBoost ID: 73608352


Rialto, CA 92376

He is a small white cat with gray/ brown spots all over him, fluffy tail, and always has snot all his noses

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Lost Female Cat last seen Ramona Blvd and Francisquito Ave, Baldwin Park, CA 91706

Reported 2 months ago, updated 3 days ago

Aurora Female Cat

LOST PawBoost ID: 73396045


Baldwin Park, CA 91706

Brown and black tabby with lots of stripes. Brown paws and swirly pattern on her side

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Lost Male Cat last seen Tumin Road, La Habra Heights, CA 90631

Reported 3 months ago, updated 3 days ago

Easy Male Cat

LOST PawBoost ID: 73238043


La Habra Heights, CA 90631

Dark Grey Tabby

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Lost Male Cat last seen Glendora Ave and Foothill, Glendora, CA 91741

Reported 8 months ago, updated 3 days ago

Snoockims Male Cat

LOST PawBoost ID: 72669665


Glendora, CA 91741

Brown tabby Maine coon

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Lost Female Cat last seen Royston and syracuse, Baldwin Park, CA 91706

Reported 5 days ago, updated 3 days ago

Aria Female Cat

LOST PawBoost ID: 73598702


Baldwin Park, CA 91706

Grey coat with white paws.

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Lost Male Cat last seen La sierra and golden, Riverside, CA 92505

Reported 5 days ago, updated 3 days ago

Tucker Male Cat

LOST PawBoost ID: 73598916


Riverside, CA 92505

Black and white cat

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Lost Male Cat last seen Vineyard Park, in a yard on Hawthorne St, Ontario, CA 91764

Reported 2 weeks ago, updated 3 days ago

Matty Male Cat

LOST PawBoost ID: 73568266


Ontario, CA 91764

Brown/Grey with black spots and stripes. White belly, paws, and area on face.

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Lost Female Cat last seen Neighborhood near 605 freeway, Baldwin Park, CA 91706

Reported 5 days ago, updated 3 days ago

Aria Female Cat

LOST PawBoost ID: 73596611


Baldwin Park, CA 91706

Grey and white. White paws and a large white belly. Usually looks mad too.

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Lost Female Cat last seen Perris blvd. And cloud haven dr, Moreno Valley, CA 92557

Reported 9 months ago, updated 3 days ago

Mama Female Cat

LOST PawBoost ID: 72532542


Moreno Valley, CA 92557

Female Grey and white domestic short hair tabby.

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

Reported 3 years ago, updated 3 days ago

Stapes Male Cat

LOST PawBoost ID: 69545645


West Covina, CA 91791

Tabby cat

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Lost Male Cat last seen Pomona fairgrounds trailer park, Pomona, CA 91768

Reported 3 years ago, updated 3 days ago

Nacho Male Cat

LOST PawBoost ID: 69431706


Pomona, CA 91768

Nacho is a very sweet cat, very long and thin. My other cat just passed a week ago and he was Nachos best friend, I believe Nacho may have gotten out to look for him and now I’m heartbroken at losing him too! Please help me find him!

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Lost Male Cat last seen Orangethorpe Willow Woods, Anaheim, CA 92807

Reported 2 weeks ago, updated 3 days ago

Nitro Male Cat

LOST PawBoost ID: 73568489


Anaheim, CA 92807

Grey MANX (no tail) white spot on side of his nose. His name is Nitro.

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Lost Male Cat last seen Crestlane and Baxter, Anaheim, CA 92805

Reported 3 weeks ago, updated 3 days ago

Kino Male Cat

LOST PawBoost ID: 73538094


Anaheim, CA 92805

Kino is a full black cat with green eyes but he has one sick eye so it’s a little cloudy. He does not have teeth and needs . He is friendly but skittish with strangers.

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Lost Male Cat last seen Palmyra & S Violet Ln, Orange, CA 92869

Reported 6 days ago, updated 3 days ago

Henry Male Cat

LOST PawBoost ID: 73596288


Orange, CA 92869

Lg black and white, very sweet but scared. He is an indoor cat.

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Lost Male Cat last seen Cul-de-sac, Riverside, CA 92506

Reported 5 days ago, updated 3 days ago

Binx Male Cat

LOST PawBoost ID: 73597097


Riverside, CA 92506

Black, missing tooth, white belly patches, chipped ear.

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Lost Female Cat last seen 68th and hamner, Corona, CA 92880

Reported 3 days ago

Spooky Female Cat

LOST PawBoost ID: 73606012


Corona, CA 92880

Black cat, no collar.

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Lost Cat Data for Ontario, CA

There are 839 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 – 2,350,949 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.