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Lost Dogs Database for Ontario, CA

Search lost and found dogs, as well as other pets, in the Ontario area with PawBoost.

868 lost dogs in your search

Lost Male Dog last seen Daycreek and 210fwy , Rancho Cucamonga, CA 91739

Reported 3 weeks ago, updated 3 weeks ago

Mateo Male Dog

LOST PawBoost ID: 72882655


Rancho Cucamonga, CA 91739

White dog with black spots on his skin. Wearing a red collar.

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Lost Male Dog last seen Unknown, San Bernardino, CA 92401

Reported 4 months ago, updated 3 weeks ago

Charlie Male Dog

LOST PawBoost ID: 72549586


San Bernardino, CA 92401

Pug/Pom

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Lost Female Dog last seen Near e court st, San Bernardino, CA 92410

Reported 3 weeks ago

Minnie Female Dog

LOST PawBoost ID: 72892581


San Bernardino, CA 92410

Pink collar ,white hairs on snout and chin, 70lbs, very flirty

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Lost Female Dog last seen Between Mango & Palmetto Ave, Fontana, CA 92335

Reported 5 months ago, updated 3 weeks ago

Suki Female Dog

LOST PawBoost ID: 72461296


Fontana, CA 92335

white & brown pomeranian mix

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Lost Female Dog last seen Near Franzen St Santa Ana, Santa Ana, CA 92705

Reported 4 weeks ago, updated 3 weeks ago

Cindy Female Dog

LOST PawBoost ID: 72857847


Santa Ana, CA 92705

Skinny white short hair bichon frisé

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Lost Female Dog last seen Near court st, San Bernardino, CA 92410

Reported 3 weeks ago

Lucy Female Dog

LOST PawBoost ID: 72891270


San Bernardino, CA 92410

Pug she is 3 months

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Lost Female Dog last seen Near court street , San Bernardino, CA 92410

Reported 3 weeks ago

Lucy Female Dog

LOST PawBoost ID: 72891206


San Bernardino, CA 92410

Lucy she is a baby pug and has her teeth out even when her mouth is closed

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Lost Male Dog last seen Mt Vernon and belleview , San Bernardino, CA 92410

Reported 3 weeks ago

Peluche Male Dog

LOST PawBoost ID: 72889564


San Bernardino, CA 92410

Has a red collar with a Spiderman tag

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Lost Female Dog last seen Elm avenue fontana , Fontana, CA 92335

Reported 3 weeks ago, updated 3 weeks ago

Bella Female Dog

LOST PawBoost ID: 72880707


Fontana, CA 92335

Black chihuahua with brown face / underside

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Lost Male Dog last seen Garey, towne , and foothill are the major streets , Pomona, CA 91767

Reported 3 weeks ago

Snoopy Male Dog

LOST PawBoost ID: 72888631


Pomona, CA 91767

He’s white with a black spot on his but

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Lost Male Dog last seen Near East Highway Near Serfas Club Exit , Corona, CA 92882

Reported 2 months ago, updated 3 weeks ago

Paco Male Dog

LOST PawBoost ID: 72715990


Corona, CA 92882

Tan Chihuahua with white face and belly

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Lost Female Dog last seen South st and olive st. Anaheim , Anaheim, CA 92805

Reported 3 weeks ago

Lola Female Dog

LOST PawBoost ID: 72888508


Anaheim, CA 92805

Black and white frenchie

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Lost Female Dog last seen pine ave and euclid ave , Chino, CA 91708

Reported 3 weeks ago, updated 3 weeks ago

Frenchie Female Dog

LOST PawBoost ID: 72880040


Chino, CA 91708

birth mark on her nose and cataracts in her eyes.

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Lost Male Dog last seen 19th and Topaz St, Rancho Cucamonga, CA 91701

Reported 1 year ago, updated 3 weeks ago

Toby Male Dog

LOST PawBoost ID: 71557949


Rancho Cucamonga, CA 91701

Black and white pied with a recent healing right eyeball injury

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Lost Male Dog last seen Washington St Colton CA , Colton, CA 92324

Reported 9 months ago, updated 3 weeks ago

Paw Male Dog

LOST PawBoost ID: 72029622


Colton, CA 92324

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Lost Female Dog last seen Hollingworth St. and Sentous Ave., West Covina, CA 91792

Reported 3 weeks ago

Daisy Female Dog

LOST PawBoost ID: 72884573


West Covina, CA 91792

Black & Brown Yorkie

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Lost Male Dog last seen Endeavor Pl, Chino, CA 91708

Reported 3 weeks ago

Lele Male Dog

LOST PawBoost ID: 72884539


Chino, CA 91708

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Lost Female Dog last seen Rubadoux and 29th , Jurupa Valley, CA 92509

Reported 1 month ago, updated 3 weeks ago

Tinkerbell Female Dog

LOST PawBoost ID: 72827077


Jurupa Valley, CA 92509

Black with some white stubby tail cattle dog

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Lost Male Dog last seen Near San Bernardino High School, San Bernardino, CA 92405

Reported 3 weeks ago, updated 3 weeks ago

Unknown Male Dog

LOST PawBoost ID: 72883187


San Bernardino, CA 92405

Loose front tooth

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Lost Male Dog last seen E heather st , Rialto, CA 92376

Reported 3 weeks ago

Gus Male Dog

LOST PawBoost ID: 72881316


Rialto, CA 92376

White franchise bulldog

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Lost Dog Data for Ontario, CA

There are 868 lost dogs in Ontario, CA.

Find Local Dog Shelters in Ontario, CA

PawBoost has communities of dog-lovers across the country and beyond that help find missing dogs, and that means partnerships with dog 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 Dog Sooner with PawBoost

When you have a missing dog, it can be difficult to know what to do in the moment.

How do I find my dog? Do I have to visit the dog 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 dog owners find their furry loved ones – 2,229,151 pets reunited and counting!

Find your lost dog faster with PawBoost.

Report Lost Dog

Frequently Asked Questions

I lost my dog. What should I do?

Take advantage of online platforms – they help you get the word out, quickly and easily. You can report your lost dog 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 dog to our lost & found, and make a lost dog flyer – all for free.

Other sites that help you raise local awareness for your lost dog 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 dog'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 dog for more actionable tips.

Where do I report a lost dog in Ontario, CA?

If you lost a dog, we would like to help. You can report a lost dog to PawBoost for free to help find your dog 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 dog?

You don't have to pay to find your lost pet with PawBoost. PawBoost's free dog finder services have helped millions of people reunite with their lost dogs.

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.