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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 In between Vermont Ave and South St near Anaheim Blvd, Anaheim, CA 92805

Reported 7 months ago, updated 1 day ago

Indi Female Cat

LOST PawBoost ID: 72756308


Anaheim, CA 92805

Grey tabby, a little bit more black colored fur on her back and tail area.

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Lost Female Cat last seen Gragmont and Fenimore, Covina, CA 91722

Reported 3 days ago, updated 1 day ago

Rosie Female Cat

LOST PawBoost ID: 73608108


Covina, CA 91722

Muted tortoiseshell

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Lost Male Cat last seen Near Blue lagoon St, Indian Summer Ave, La Puente, CA 91744

Reported 3 days ago, updated 1 day ago

Simba Male Cat

LOST PawBoost ID: 73608034


La Puente, CA 91744

Grey, tan, white stripped with white belly and paws with a snipped right ear.

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Lost Male Cat last seen McArthur & Sage, Riverside, CA 92503

Reported 1 day ago

Cudi Male Cat

LOST PawBoost ID: 73615801


Riverside, CA 92503

Light grey and white spots with green eyes

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Lost Male Cat last seen Old pomegranate rd, Yorba Linda, CA 92887

Reported 1 day ago

Boba Male Cat

LOST PawBoost ID: 73615793


Yorba Linda, CA 92887

Domestic shorthair gray

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Lost Male Cat last seen Bronco, Norco, CA 92860

Reported 3 days ago, updated 1 day ago

Rowdy Male Cat

LOST PawBoost ID: 73607865


Norco, CA 92860

Black and white

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Lost Female Cat last seen Proctor Ave la puente, Avocado Heights, CA 91746

Reported 1 week ago, updated 1 day ago

Zimba Female Cat

LOST PawBoost ID: 73577028


Avocado Heights, CA 91746

Black, gray and white spots

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Lost Male Cat last seen Orange st & Columbia, Riverside, CA 92501

Reported 2 weeks ago, updated 1 day ago

Sammy Male Cat

LOST PawBoost ID: 73563655


Riverside, CA 92501

Grey and white

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Lost Female Cat last seen Aldena park little chapman, Fullerton, CA 92833

Reported 1 day ago

Leeloo Female Cat

LOST PawBoost ID: 73615128


Fullerton, CA 92833

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Lost Male Cat last seen Angela st, Pomona,ca, Pomona, CA 91766

Reported 2 years ago, updated 1 day ago

Mufasa Male Cat

LOST PawBoost ID: 71224914


Pomona, CA 91766

Tan medium hair

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Lost Male Cat last seen Imperial, La Habra, CA 90631

Reported 4 weeks ago, updated 1 day ago

Filed Male Cat

LOST PawBoost ID: 73498299


La Habra, CA 90631

Black and white Siamese

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Lost Female Cat last seen Azusa and Aroma, West Covina, CA 91791

Reported 1 week ago, updated 1 day ago

Runt Female Cat

LOST PawBoost ID: 73583464


West Covina, CA 91791

Gray tabby with distinct scar on nose. Possibly black collar w air tag.

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Lost Female Cat last seen Near Green River Road, Corona, CA 92882

Reported 9 months ago, updated 1 day ago

Venus Female Cat

LOST PawBoost ID: 72514340


Corona, CA 92882

Calico female cat

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Lost Male Cat last seen Tyler Street and Hole Ave, Riverside, CA 92505

Reported 3 days ago, updated 1 day ago

Nopalito Male Cat

LOST PawBoost ID: 73606378


Riverside, CA 92505

Black neutered male cat answers to Nopalito. Has to small bald spots on his right side. Very friendly. No collar because he managed to take it off but is microchipped

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Lost Male Cat last seen San Rafael Arcangel Ln. near Santa Inez, Riverside, CA 92508

Reported 5 months ago, updated 1 day ago

Newt Male Cat

LOST PawBoost ID: 73052520


Riverside, CA 92508

Dark Grey with White Chest and Paws. White starts under his chin, stops briefly, causing a grey bow like pattern and then white begins again. I miss him terribly.

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Lost Female Cat last seen Airtag last detected location at Tyler Ave and Brockway St next to I-10 West, El Monte, CA 91732

Reported 2 weeks ago, updated 1 day ago

Chinsu Female Cat

LOST PawBoost ID: 73575086


El Monte, CA 91732

petite black and white tuxedo cat with white chest to chin and block dot under chin, with white paws. was wearing a reflective neon breakaway collar with a black name tag and an airtag with a green case

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Lost Male Cat last seen Magnolia Avenue by the Riverside Aspens apmts., Riverside, CA 92504

Reported 1 month ago, updated 1 day ago

Nero Male Cat

LOST PawBoost ID: 73486319


Riverside, CA 92504

He is cautious from people he doesn't know. He is a tabby with slightly dark markings, has yellow eyes, is decently medium sized. He also has dark stripes on his tail and at the end of his tail. A dust brown color on his neck and on his stomach. He has chubby cheeks and no collar on.

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Lost Female Cat last seen Shamrock and Olive in Recreation Park, Monrovia, Monrovia, CA 91016

Reported 2 weeks ago, updated 1 day ago

Mimi Female Cat

LOST PawBoost ID: 73574817


Monrovia, CA 91016

Black and gray tabby with subtle brown on her belly and paws. She's a little bit shy.

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Lost Unknown Cat last seen W 6th Street, San Bernardino, CA 92410

Reported 2 years ago, updated 1 day ago

Snowflake Unknown Cat

LOST PawBoost ID: 71205078


San Bernardino, CA 92410

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Lost Female Cat last seen Ridgewater, Sunnybrook, Green ridge, Hidden Springs Pkwy, Pigeon Pass, Moreno Valley, CA 92557

Reported 2 months ago, updated 1 day ago

Kitty Kitty Female Cat

LOST PawBoost ID: 73391166


Moreno Valley, CA 92557

Gray tabby with racoon looking tail

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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 – 2,350,928 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.