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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.

1095 lost cats in your search

Lost Female Cat last seen HASTER AND ORANGEWOOD IN ANAHEIM, Anaheim, CA 92815

Reported 2 months ago, updated 11 mins ago

Unknown Female Cat

LOST PawBoost ID: 72854153


Anaheim, CA 92815

COLLAR CHECKERBOARD > LIGHT GREEN WITH WHITE.

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Lost Female Cat last seen Summer field boba in Rosemead, Rosemead, CA 91770

Reported 16 mins ago

Missy Female Cat

LOST PawBoost ID: 73166685


Rosemead, CA 91770

Tabby (black and grey)

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Lost Male Cat last seen Envoy Ave and hillside st, Corona, CA 92881

Reported 23 mins ago

Love Male Cat

LOST PawBoost ID: 73166672


Corona, CA 92881

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Lost Male Cat last seen Deerpark drive and placentia ave, Fullerton, CA 92831

Reported 29 mins ago

Kitty Caker'z Male Cat

LOST PawBoost ID: 73166653


Fullerton, CA 92831

Black and white

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Lost Female Cat last seen Via Verde ests, San Dimas, CA 91773

Reported 2 months ago, updated 48 mins ago

Yumi Female Cat

LOST PawBoost ID: 72886135


San Dimas, CA 91773

White, orange and Black

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Lost Female Cat last seen Donway and Lake Canyon, Rowland Heights, CA 91789

Reported 2 weeks ago, updated 1 hour ago

Rowdy Female Cat

LOST PawBoost ID: 73092474


Rowland Heights, CA 91789

Black and white with black moustache

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Lost Male Cat last seen Arrow Hwy and Indian Hill, Claremont, CA 91767

Reported 8 months ago, updated 1 hour ago

Kitty Male Cat

LOST PawBoost ID: 72268989


Claremont, CA 91767

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Lost Female Cat last seen Collet, Riverside, CA 92505

Reported 3 years ago, updated 2 hours ago

Pepper Female Cat

LOST PawBoost ID: 69358944


Riverside, CA 92505

Black f female cat with la little bit of white on her chest and under arms. She is microchipped

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Lost Female Cat last seen Mills and Carnell St., Whittier, CA 90603

Reported 9 months ago, updated 2 hours ago

Phoebe Female Cat

LOST PawBoost ID: 72166245


Whittier, CA 90603

Long haired Siamese mix, blue eyes

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Lost Male Cat last seen Grand and Covina. In front of Stone Bridge Community, Covina, CA 91724

Reported 4 hours ago

Roger Male Cat

LOST PawBoost ID: 73165906


Covina, CA 91724

12 year old male orange tabby cat

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Lost Female Cat last seen Near E 2nd St, Santa Ana, CA 92701

Reported 1 year ago, updated 5 hours ago

Cookie Female Cat

LOST PawBoost ID: 71821470


Santa Ana, CA 92701

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Lost Male Cat last seen California Ave and Arlington, Riverside, CA 92504

Reported 9 months ago, updated 5 hours ago

Circuit Male Cat

LOST PawBoost ID: 72212060


Riverside, CA 92504

Dark brown tabby with black swirly pattern on his sides

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Lost Female Cat last seen Hawaii way and kraemer blvd, Placentia, CA 92870

Reported 2 months ago, updated 6 hours ago

Cloe Female Cat

LOST PawBoost ID: 72870903


Placentia, CA 92870

Reward to find my Cloe she has blue eyes.and an older large, spayed Cat. She's borwn and white. If found please let me know we miss her so much etc. Thank you and I appreciate all.

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Lost Male Cat last seen Long Leaf Pine Pl, San Bernardino, CA 92407

Reported 2 weeks ago, updated 12 hours ago

Toby Male Cat

LOST PawBoost ID: 73120071


San Bernardino, CA 92407

11 year old neutered black male cat w/ white in his ears, on his chest & stomach. Very sweet cat & answers to his name “Toby” I’ve had him with me since he was born, I’m devastated he’s missing. When you see him. Please call!

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Lost Male Cat last seen Parking lot of Wateridge apmts, Anaheim, CA 92806

Reported 4 weeks ago, updated 12 hours ago

Jmahr Male Cat

LOST PawBoost ID: 73057857


Anaheim, CA 92806

White, long hair , Blue eyes, Spayed

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Lost Female Cat last seen Villa Clara Street, Rowland Heights, CA 91748

Reported 2 weeks ago, updated 13 hours ago

Winnie Female Cat

LOST PawBoost ID: 73114954


Rowland Heights, CA 91748

Grey medium long hair cat with stripes, pink nose and yellowish eyes

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Lost Female Cat last seen Hensley at corona pointe, Corona, CA 92881

Reported 1 month ago, updated 13 hours ago

Marshie Female Cat

LOST PawBoost ID: 72992700


Corona, CA 92881

Older female grey cat with some with fur near her lower abdomen.

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Lost Female Cat last seen Azusa Avenue, West Covina, CA 91791

Reported 3 weeks ago, updated 13 hours ago

Khloe Female Cat

LOST PawBoost ID: 73062223


West Covina, CA 91791

Khloe, calico with spot on nose

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Lost Male Cat last seen Utica St and Leland Avenue, Whittier, CA 90605

Reported 5 months ago, updated 13 hours ago

Buddy Male Cat

LOST PawBoost ID: 72586923


Whittier, CA 90605

Black and White. Friendly towards people, but maybe shy at first. I don’t have facebook, if you find him please email pictures to

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Lost Male Cat last seen Sacramento st and Cloverdale Ave, Orange, CA 92867

Reported 1 week ago, updated 14 hours ago

Pebble Male Cat

LOST PawBoost ID: 73128369


Orange, CA 92867

Gray russian blue with yellow green eyes

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Lost Cat Data for Ontario, CA

There are 1095 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 – 2,268,227 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.