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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 Malvern and Bastanchury, Fullerton, CA 92833

Reported 1 week ago

Komori Female Cat

LOST PawBoost ID: 73578239


Fullerton, CA 92833

Black cat, green eyes, brown undercoat under the sun, bit of white hairs on her chest, about 8lbs.

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Lost Male Cat last seen Csusb, San Bernardino, CA 92407

Reported 1 week ago

Oreo Male Cat

LOST PawBoost ID: 73578171


San Bernardino, CA 92407

med length tabby cat with all black paws under green eyes very vocal meows very friendly and has a grey small collar with no tags

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Lost Female Cat last seen Near sudene and Raymond, Fullerton, CA 92831

Reported 2 months ago, updated 1 week ago

Sage Female Cat

LOST PawBoost ID: 73408005


Fullerton, CA 92831

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Lost Male Cat last seen Rockridge dr., Fontana, CA 92335

Reported 2 weeks ago, updated 1 week ago

Peewee Male Cat

LOST PawBoost ID: 73569640


Fontana, CA 92335

Blue eyes/White fur/ brown&grey stripes/black tail & has a black collar with silver bell

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Lost Male Cat last seen Via lomas de Yorba east/la Palma, Yorba Linda, CA 92887

Reported 2 months ago, updated 1 week ago

Cooper Male Cat

LOST PawBoost ID: 73334093


Yorba Linda, CA 92887

Black with green eyes

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Lost Male Cat last seen Rustin, Massachusetts, Riverside, CA 92507

Reported 3 weeks ago, updated 1 week ago

Calvin Male Cat

LOST PawBoost ID: 73531237


Riverside, CA 92507

Fully grown male cat, last seen with his dad (Name Rex, who is a skinnier same looking cat) they are both males and not neutered. Very friendly and cuddly. They both meow very loud, and have no problem climbing fences or getting on roofs.

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Lost Female Cat last seen Magnolia y durfee, El Monte, CA 91732

Reported 1 month ago, updated 1 week ago

Luna Female Cat

LOST PawBoost ID: 73479060


El Monte, CA 91732

Gato gris y no tenia collar

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Lost Female Cat last seen Montecito Ln and Telegraph Rd, Riverside, CA 92507

Reported 2 weeks ago, updated 1 week ago

Graycee Female Cat

LOST PawBoost ID: 73564983


Riverside, CA 92507

Gray Petite Female with Fluffy Tail

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Lost Male Cat last seen South sunset drive, West Covina, CA 91790

Reported 1 week ago

Gibby Male Cat

LOST PawBoost ID: 73577189


West Covina, CA 91790

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Lost Male Cat last seen Mendoza Rd and Tarara Dr, Moreno Valley, CA 92557

Reported 2 weeks ago

Minchito Male Cat

LOST PawBoost ID: 73576319


Moreno Valley, CA 92557

Black and gray, wearing Angels baseball collar

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Lost Male Cat last seen Gavey Avenue and Tyler Avenue, El Monte, CA 91733

Reported 3 weeks ago, updated 2 weeks ago

ONEX Male Cat

LOST PawBoost ID: 73546514


El Monte, CA 91733

Black Cat

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Lost Female Cat last seen Magnolia Villa Apts Magnolia/Myers st, Riverside, CA 92503

Reported 2 months ago, updated 2 weeks ago

Rose Female Cat

LOST PawBoost ID: 73324880


Riverside, CA 92503

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Lost Male Cat last seen Haven and Baseline, Rancho Cucamonga, CA 91730

Reported 2 weeks ago

Honeybun Male Cat

LOST PawBoost ID: 73574831


Rancho Cucamonga, CA 91730

Sweet older cat belonging to grandmother. Last seen 4 days ago around Haven and Baseline.

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Lost Female Cat last seen 17th and Yorba, Tustin, CA 92780

Reported 2 weeks ago

Poppy Female Cat

LOST PawBoost ID: 73574784


Tustin, CA 92780

she is 8 months old and a calico cat

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Lost Female Cat last seen La Verne Heights Elementary School, La Verne, CA 91750

Reported 2 weeks ago, updated 2 weeks ago

Bella Female Cat

LOST PawBoost ID: 73565220


La Verne, CA 91750

Female gray & white short-haired cat White chest and paws • Pink nose • Yellow-green eyes Wearing a flea collar when last seen

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Lost Female Cat last seen Butterfield Rd & Jess St, Pomona, CA 91766

Reported 5 months ago, updated 2 weeks ago

Kitty Female Cat

LOST PawBoost ID: 73031801


Pomona, CA 91766

She is around 10 and is inside/outside cat. She is super friendly and does get scared with loud noises. She also loves to hides.

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Lost Female Cat last seen San Bernardino ave, Bloomington, CA 92316

Reported 3 weeks ago, updated 2 weeks ago

Stevie Female Cat

LOST PawBoost ID: 73530769


Bloomington, CA 92316

A few white hair her

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

Reported 1 month ago, updated 2 weeks ago

Kiwi Male Cat

LOST PawBoost ID: 73455391


Fontana, CA 92335

Grey cat with white chest and paws

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Lost Female Cat last seen Badillo and lark Ellen, West Covina, CA 91791

Reported 4 weeks ago, updated 2 weeks ago

Daveena Female Cat

LOST PawBoost ID: 73513670


West Covina, CA 91791

Tuxedo cat with white spot on left side of her face

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Lost Male Cat last seen Near locust avenue, Fontana, CA 92335

Reported 2 weeks ago

Wonie Male Cat

LOST PawBoost ID: 73573802


Fontana, CA 92335

Wonie is blind in one eye and also has a green collar.

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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 – 2,350,983 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.