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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 Male Cat last seen Between Fifth & Mayflower, Monrovia, CA 91016

Reported 5 months ago, updated 2 weeks ago

Scar Male Cat

LOST PawBoost ID: 72971851


Monrovia, CA 91016

DSH Brown Tabby,

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Lost Female Cat last seen Armstrong Rd, Karen Ln, Gail Dr, Wegman Dr, Riverside, CA 92509

Reported 4 weeks ago, updated 2 weeks ago

Daisy Female Cat

LOST PawBoost ID: 73511280


Riverside, CA 92509

Orange female cat, 10 pounds larger size. Has small dark flea collar with gold buckle. Explores outside often on Armstrong road and Gail drive.

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Lost Female Cat last seen Wilding and Versailles Cir, Riverside, CA 92506

Reported 3 weeks ago, updated 2 weeks ago

Kimchi Female Cat

LOST PawBoost ID: 73539696


Riverside, CA 92506

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Lost Female Cat last seen Washington St & Mohave Dr., Colton, CA 92324

Reported 2 months ago, updated 2 weeks ago

Snow Female Cat

LOST PawBoost ID: 73424000


Colton, CA 92324

She is a fluffy cream colored cat with a small white mark on her forehead and white on her chest and to her stomach. She has a black and white blackcraft collar that has a bow and a pink heart name tag.

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Lost Female Cat last seen Buena Vista St, Placentia, CA 92811

Reported 4 months ago, updated 2 weeks ago

Pepper Female Cat

LOST PawBoost ID: 73170197


Placentia, CA 92811

Brown tabby, she has a white chest and three of her paws are white.

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Lost Female Cat last seen Riverside side ave/ willow, Rialto, CA 92376

Reported 2 months ago, updated 3 weeks ago

Honey Coco Female Cat

LOST PawBoost ID: 73426451


Rialto, CA 92376

Black female tiny speak of white on chest and round scrar on ear

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Lost Male Cat last seen Hillside Community Church, Rancho Cucamonga, CA 91737

Reported 2 months ago, updated 3 weeks ago

Xiao Bao Male Cat

LOST PawBoost ID: 73428105


Rancho Cucamonga, CA 91737

White/cream with dark leopard prints

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Lost Male Cat last seen Perris Blvd, Moreno Valley, CA 92557

Reported 3 weeks ago, updated 3 weeks ago

Tobey Male Cat

LOST PawBoost ID: 73533409


Moreno Valley, CA 92557

Orange short hair tabby

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Lost Male Cat last seen Ellington Way and Bristol Lane, Chino Hills CA, Chino Hills, CA 91709

Reported 3 weeks ago, updated 3 weeks ago

Sonny Male Cat

LOST PawBoost ID: 73537504


Chino Hills, CA 91709

American Shorthair, large male cat with black, brown and white markings.

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Lost Male Cat last seen Van buren , canyon ridge, Riverside, CA 92503

Reported 1 month ago, updated 3 weeks ago

Blue Male Cat

LOST PawBoost ID: 73484148


Riverside, CA 92503

Black and white tuxedo with white boots

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Lost Male Cat last seen Rancho Escondido Dr, Riverside, CA 92506

Reported 3 weeks ago, updated 3 weeks ago

Lightening Male Cat

LOST PawBoost ID: 73533747


Riverside, CA 92506

Dark grey

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Lost Female Cat last seen Archibald and 65th, Corona, CA 92880

Reported 3 weeks ago

Kyrie Female Cat

LOST PawBoost ID: 73545463


Corona, CA 92880

Gray and white

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Lost Male Cat last seen Ralph’s, Fontana, CA 92336

Reported 3 weeks ago, updated 3 weeks ago

Tito Male Cat

LOST PawBoost ID: 73535044


Fontana, CA 92336

Black kitty

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Lost Female Cat last seen Near Hacienda Dr Duarte ca, Duarte, CA 91010

Reported 7 months ago, updated 3 weeks ago

Ripley Female Cat

LOST PawBoost ID: 72757448


Duarte, CA 91010

Grey and white female, around 8 lbs. Had black collar on with tags when went missing. Likely hiding.

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Lost Male Cat last seen Ave juan diaz, Sandoval ave, Riverside, CA 92509

Reported 1 month ago, updated 3 weeks ago

Duvalin Male Cat

LOST PawBoost ID: 73490281


Riverside, CA 92509

Siamese with dark coat blue eyes

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Lost Male Cat last seen tilton avenue, Riverside, CA 92509

Reported 3 weeks ago

Ghost Male Cat

LOST PawBoost ID: 73540559


Riverside, CA 92509

7 month kitty with black spots on his back like a cow, he has a spot shaped as a heart, he’s chubby and he’s very handsome. he has a black spot under his chin and he was born with a chipped ear.

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Lost Male Cat last seen Garfield St & Adam’s Ave, Riverside, CA 92504

Reported 2 months ago, updated 3 weeks ago

Charles Male Cat

LOST PawBoost ID: 73419529


Riverside, CA 92504

Brown/gray tabby with white chest, belly & paws. Green eyes, pink nose. EXTRA TOES on all four paws (polydactyl). Neutered male. Very friendly and cuddly.

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Lost Female Cat last seen Monterey street, Fontana, Fontana, CA 92336

Reported 3 weeks ago, updated 3 weeks ago

Unnamed Female Cat

LOST PawBoost ID: 73530047


Fontana, CA 92336

2 Orange kittens, littermates

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Lost Female Cat last seen Badillo and sunflower, Covina, CA 91724

Reported 3 weeks ago

Misty Female Cat

LOST PawBoost ID: 73539630


Covina, CA 91724

Black with orange spots. Orange eyes

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Lost Female Cat last seen Garfield and Sacramento, Orange, CA 92867

Reported 4 months ago, updated 3 weeks ago

Binx Female Cat

LOST PawBoost ID: 73078748


Orange, CA 92867

Black domestic shorthair with green/gold eyes

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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 – 2,351,022 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.