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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 Gun Tree Drive and Cold Plains Drive, Hacienda Heights, CA, Hacienda Heights, CA 91745

Reported 1 year ago, updated 11 hours ago

Buckley Male Cat

LOST PawBoost ID: 71658516


Hacienda Heights, CA 91745

Black and white short haired cat, with swirly pattern on back and sides. Around 9-10 pounds.

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Lost Male Cat last seen Arrowview Animal Clinic in the alley north of Highland Ave, San Bernardino, CA 92404

Reported 2 years ago, updated 12 hours ago

Tinker Male Cat

LOST PawBoost ID: 71083788


San Bernardino, CA 92404

Just got neutered 9 days ago. Shaved and tattooed. He's an outdoors cat could be friendly but coucious. Lost at vets near Perris Hill Park in alley way.

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Lost Male Cat last seen E 8th and S Palomares St, Pomona, CA 91766

Reported 7 months ago, updated 12 hours ago

Bobby Male Cat

LOST PawBoost ID: 72773930


Pomona, CA 91766

Gray and white Tabby. Black smudge on his nose. Neutered and responds to his name

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Lost Male Cat last seen sand canyon and stone canyon in Brea, Brea, CA 92821

Reported 2 months ago, updated 13 hours ago

Lux Male Cat

LOST PawBoost ID: 73393007


Brea, CA 92821

Grey Mainecoon

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Lost Male Cat last seen Malvern/ burning tree, Fullerton, CA 92833

Reported 3 months ago, updated 14 hours ago

Noah Male Cat

LOST PawBoost ID: 73233761


Fullerton, CA 92833

Recently shaved..white Himalayan

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Lost Male Cat last seen Leffingwell & 1st, Whittier, CA 90604

Reported 3 days ago, updated 14 hours ago

Dusty Male Cat

LOST PawBoost ID: 73608269


Whittier, CA 90604

Fluffy gray and white cat with extra toes on each front paw

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Lost Female Cat last seen Ontario center school, Ontario, CA 91764

Reported 14 hours ago

Faye Female Cat

LOST PawBoost ID: 73617145


Ontario, CA 91764

Tabby cat

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Lost Female Cat last seen Underhill Dr and Lowe Dr near bushes, Placentia, CA 92870

Reported 14 hours ago

Freya Female Cat

LOST PawBoost ID: 73617054


Placentia, CA 92870

Slight hints of pink from when we used dye to throw some color on her. She lovesssss food

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Lost Male Cat last seen None, Diamond Bar, CA 91765

Reported 1 week ago, updated 15 hours ago

Willow Male Cat

LOST PawBoost ID: 73586132


Diamond Bar, CA 91765

Tuxedo cat, very friendly and vocal. Has a collar around his neck with a bell on it.

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Lost Female Cat last seen Genoa, Monrovia, CA 91016

Reported 11 months ago, updated 15 hours ago

Betty Rose Female Cat

LOST PawBoost ID: 72346276


Monrovia, CA 91016

Tabby with white legs / ear tipped.

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Lost Male Cat last seen Locust and Randall, Fontana, CA 92335

Reported 3 days ago, updated 16 hours ago

Anakin Male Cat

LOST PawBoost ID: 73608033


Fontana, CA 92335

ANAKIN, mostly white on the bottom of the body and black above his body.

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

Reported 4 months ago, updated 16 hours ago

Moochie Female Cat

LOST PawBoost ID: 73130536


West Covina, CA 91791

Indoor but a little caughtios

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Lost Male Cat last seen Valley Dr and Misty Ridge Dr, Riverside, CA 92505

Reported 20 hours ago

Elvis Male Cat

LOST PawBoost ID: 73616467


Riverside, CA 92505

Elvis: Male About 2 years old Short haired, black and white, white stripe on right back leg

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Lost Female Cat last seen Misty Ridge Dr and Valley Drive, Riverside, CA 92505

Reported 20 hours ago

Aurora Female Cat

LOST PawBoost ID: 73616464


Riverside, CA 92505

Aurora: Female About 2 years old Beige, long haired, very fluffy tail Very sweet, but shy

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Lost Male Cat last seen Jurupa & Deerfield, Riverside, CA 92504

Reported 3 days ago, updated 22 hours ago

Mr.Ziggy Male Cat

LOST PawBoost ID: 73608362


Riverside, CA 92504

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Lost Male Cat last seen Willow and Lilac, Rialto, CA 92376

Reported 23 hours ago

Toji Male Cat

LOST PawBoost ID: 73616306


Rialto, CA 92376

Brown and white Tabby with ringed and bushy tail

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Lost Male Cat last seen E lugonia, Redlands, CA 92374

Reported 24 hours ago

simba Male Cat

LOST PawBoost ID: 73616287


Redlands, CA 92374

orange tabby.

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Lost Male Cat last seen Victoria avenue riverside ca, Riverside, CA 92504

Reported 1 day ago

Milo Male Cat

LOST PawBoost ID: 73616231


Riverside, CA 92504

White with gray spots on tummy

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Lost Female Cat last seen 7th and Baker, Ontario, CA 91764

Reported 1 day ago

Littles Female Cat

LOST PawBoost ID: 73616162


Ontario, CA 91764

Female orange tabby - long haired.

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Lost Male Cat last seen Mural & Barton St Perris,Ca, Mead Valley, CA 92570

Reported 10 months ago, updated 1 day ago

Knight Male Cat

LOST PawBoost ID: 72499527


Mead Valley, CA 92570

My cat Knight is missing — 4-year-old male, indoor only very gentle and friendly. He is a big boy and may approach people. He is a Black and white color cat and has a unique diamond shape on his nose.

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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.