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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.

1062 lost cats in your search

Lost Female Cat last seen Parks Junior High, Pioneer Ave, Paseo Dorado Road, Fullerton, CA 92833

Reported 1 week ago, updated 16 mins ago

Csunyi Female Cat

LOST PawBoost ID: 73304569


Fullerton, CA 92833

Black and brown with white underbelly

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Lost Female Cat last seen Santa Gertrudes Ave, Whittier, CA 90603

Reported 4 weeks ago, updated 46 mins ago

Angel Female Cat

LOST PawBoost ID: 73232242


Whittier, CA 90603

Long hair grey cat, she has a heart shaped collar on. Very friendly and chunky .

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Lost Male Cat last seen Near mona bell ct riverside ca 92504, Riverside, CA 92504

Reported 2 months ago, updated 51 mins ago

Anakin Male Cat

LOST PawBoost ID: 73120247


Riverside, CA 92504

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

Reported 6 months ago, updated 2 hours 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 Whittier California close to calhigh, Whittier, CA 90602

Reported 3 weeks ago, updated 3 hours ago

Kitty Male Cat

LOST PawBoost ID: 73256105


Whittier, CA 90602

He’s so chill please find him

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Lost Unknown Cat last seen University Parkway, San Bernardino, CA 92405

Reported 2 weeks ago, updated 3 hours ago

Free kittens Unknown Cat

LOST PawBoost ID: 73277332


San Bernardino, CA 92405

Black and gray

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Lost Male Cat last seen Cardinal and Clinton St, Garden Grove, CA 92843

Reported 1 year ago, updated 3 hours ago

Jerry Male Cat

LOST PawBoost ID: 71531077


Garden Grove, CA 92843

White with brown/gray tabby markings. Pink nose with black spot. Golden eyes. May respond to his name if called gently

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Lost Male Cat last seen Near N Darwood Ave 91773, San Dimas, CA 91773

Reported 2 months ago, updated 4 hours ago

Dr. Piglet Male Cat

LOST PawBoost ID: 73121520


San Dimas, CA 91773

very beige, minimal/damask markings, long/large kitty, very timid/sweet

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Lost Male Cat last seen Home but live in front of school of van wig, La Puente, CA 91744

Reported 2 months ago, updated 4 hours ago

Mochi Male Cat

LOST PawBoost ID: 73128651


La Puente, CA 91744

He looks like a black cat but has white paws, tummy and jaw/mouth

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Lost Male Cat last seen Beach Blvd & Malvern Ave, Buena Park, CA 90621

Reported 2 months ago, updated 4 hours ago

Toro Male Cat

LOST PawBoost ID: 73105085


Buena Park, CA 90621

5 yo Male cross eyed lynx point Siamese, 12 lbs, neutered

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Lost Female Cat last seen Mission & Pipeline, Montclair, CA 91763

Reported 1 year ago, updated 5 hours ago

Bessie Female Cat

LOST PawBoost ID: 71611512


Montclair, CA 91763

White and black kitty. She has half a black mark on her top left lip that looks kind of like a mustache.

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Lost Male Cat last seen Near S Rustic Ln, Anaheim, CA 92804

Reported 1 year ago, updated 5 hours ago

Matcha Male Cat

LOST PawBoost ID: 71877482


Anaheim, CA 92804

He is a big cat, blue golden color.

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Lost Female Cat last seen Chapman and Brookhust near Faylane Elementary, Garden Grove, CA 92840

Reported 2 months ago, updated 6 hours ago

Grimm Female Cat

LOST PawBoost ID: 73101965


Garden Grove, CA 92840

Spayed female, fluffy medium haired tortiseshell colored cat with half orange nose. Caught on camera sneaking out of a screen door to the backyard at 8:30pm. She wearing a blue seresto flea collar at the time. She is friendly but does hide when she gets scared so she could be hiding in nearby yards or at the park. Reward for her safe return.

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Lost Female Cat last seen Gatlin and Stovall Avenue, Hacienda Heights, CA 91745

Reported 6 hours ago

Luna Female Cat

LOST PawBoost ID: 73343453


Hacienda Heights, CA 91745

Tabby with white chest

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Lost Male Cat last seen Los Ángeles and Walnut ave, Baldwin Park, CA 91706

Reported 2 weeks ago, updated 6 hours ago

Kiro Male Cat

LOST PawBoost ID: 73279523


Baldwin Park, CA 91706

1year old. He’s gray with white on the side of his stomach he has white circles. He’s microchipped

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Lost Male Cat last seen Whistler and De Berry Street, Grand Terrace, CA 92313

Reported 7 months ago, updated 6 hours ago

Lucky Male Cat

LOST PawBoost ID: 72493882


Grand Terrace, CA 92313

White and black. Blue eyes

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Lost Male Cat last seen Lark Ellen and Cameron Next to the park, West Covina, CA 91791

Reported 2 months ago, updated 7 hours ago

Hunter Male Cat

LOST PawBoost ID: 73133683


West Covina, CA 91791

white paws, with a black spot on the back

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Lost Female Cat last seen Western Ave, Buena Park, CA 90621

Reported 3 weeks ago, updated 8 hours ago

Persephone/zumi Female Cat

LOST PawBoost ID: 73252973


Buena Park, CA 90621

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

Reported 3 months ago, updated 9 hours ago

Scar Male Cat

LOST PawBoost ID: 72971851


Monrovia, CA 91016

DSH Brown Tabby,

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Lost Cat Data for Ontario, CA

There are 1062 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 – 2,300,976 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.