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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.

883 lost dogs in your search

Lost Male Dog last seen Upland ave, Fontana, CA 92335

Reported 5 days ago

Creed Male Dog

LOST PawBoost ID: 73511712


Fontana, CA 92335

Is dark brown with tan

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Lost Female Dog last seen Sanchez st, San Bernardino, CA 92404

Reported 4 months ago, updated 5 days ago

Sherly Female Dog

LOST PawBoost ID: 73036541


San Bernardino, CA 92404

Small chihuahua. Very shy and timid.

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Lost Male Dog last seen 1700Wilson Ave Arcadia, CA, Arcadia, CA 91006

Reported 5 days ago

Gino Male Dog

LOST PawBoost ID: 73511415


Arcadia, CA 91006

White Maltese with short fur

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Lost Female Dog last seen Miller Ave. baseline Ave., Fontana, CA 92336

Reported 11 months ago, updated 5 days ago

Tootsie Female Dog

LOST PawBoost ID: 72227594


Fontana, CA 92336

Black and tan terrier chihuahua mix

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Lost Unknown Dog last seen Near Krameria Ave, Riverside CA 92508, Riverside, CA 92508

Reported 5 days ago

Unknown Unknown Dog

LOST PawBoost ID: 73510790


Riverside, CA 92508

White husky

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Lost Female Dog last seen Pathway Church, Riverside, CA 92506

Reported 1 year ago, updated 5 days ago

Sydney Female Dog

LOST PawBoost ID: 71887974


Riverside, CA 92506

Long legs fast black tan white cute

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Lost Male Dog last seen Basetdale Avenue, La Puente, CA 91746

Reported 11 months ago, updated 5 days ago

Goofy Boy Male Dog

LOST PawBoost ID: 72226194


La Puente, CA 91746

All white, fluffy, feathery fur. He has bent ears and a showy, plumy tail He holds high over his back. He squints his right eye quite a bit from being born with entropion rolling eyelids, though he underwent surgery, he still will squint at times. He has dark eyes. He has pink and black gums. He is neutered and received his other vaccinations via original owner. He also has his Rabies vaccine which is good until April 11, 2026. This pup is not aggressive , but aloof and not highly sociable, more wary. He is still a baby . He has his personality from his parentage. Tibetan Mastiff and American Akita. He is comfortable with people that know him and the dogs he grew with. Due to his size , he may appear scary and his eyes are noticeable but he is less than a year old and not a threat. He had just been adopted out with his sister Helena and broke out just about the next day of his new residence. He is microchipped. I am hoping he is safe and his new owner is searching around through local areas for him as well. He was found by someone on Facebook , but he left. If anyone sees him, please call Animal Control. He is microchipped and he will be reunited via this way. He most likely will not go with anyone willingly, but he has been gone for some time. I am hoping he is not hurt or dead.

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Lost Male Dog last seen Near Roosevelt ave san bernardino ca 92411, San Bernardino, CA 92411

Reported 1 year ago, updated 5 days ago

Thunder Male Dog

LOST PawBoost ID: 71587066


San Bernardino, CA 92411

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Lost Male Dog last seen Near Balfore, Riverside, CA 92506

Reported 3 months ago, updated 5 days ago

Cornelius Male Dog

LOST PawBoost ID: 73189505


Riverside, CA 92506

Spayed

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Lost Male Dog last seen Catcus and san bernardino, Rialto, CA 92376

Reported 1 month ago, updated 5 days ago

Cancelo Male Dog

LOST PawBoost ID: 73401586


Rialto, CA 92376

Brown with white

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Lost Female Dog last seen Colorado Street, W. Evans Street, North Arizona Ave, San Bernardino, CA 92411

Reported 5 days ago

Queenie Female Dog

LOST PawBoost ID: 73509865


San Bernardino, CA 92411

White Maltese with a small abrasion on the top of her front right paw.

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Lost Male Dog last seen Fern ln and reche canyon road, Colton, CA 92324

Reported 2 months ago, updated 5 days ago

Sheep Male Dog

LOST PawBoost ID: 73235870


Colton, CA 92324

15 year old Black weiner dog with white face. Has a large fat pocket by his private.

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Lost Male Dog last seen Reagan and Jenifer, Riverside, CA 92509

Reported 4 weeks ago, updated 5 days ago

Raylene Angeles Male Dog

LOST PawBoost ID: 73422072


Riverside, CA 92509

Black with white under chin

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Lost Female Dog last seen Oasis palms st /Pennsylvania Ave /between Rialto and mill, San Bernardino, CA 92410

Reported 5 days ago, updated 5 days ago

Unknown Female Dog

LOST PawBoost ID: 73509445


San Bernardino, CA 92410

Brown German shepherd

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Lost Male Dog last seen Mission and Rubidox Blvd, Jurupa Valley, CA 92509

Reported 5 days ago

Cusco Male Dog

LOST PawBoost ID: 73509420


Jurupa Valley, CA 92509

Pit German Shepherd mix

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Lost Female Dog last seen Vermont and June PL, San Bernardino, CA 92407

Reported 4 months ago, updated 5 days ago

Zuly Female Dog

LOST PawBoost ID: 73051029


San Bernardino, CA 92407

Black and white Shih Tzu with black ears

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Lost Unknown Dog last seen Vincent ave and cypress ave , covina, Vincent, CA 91722

Reported 1 week ago, updated 5 days ago

Unknown Unknown Dog

LOST PawBoost ID: 73500102


Vincent, CA 91722

2 multipoo mix dogs

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Lost Unknown Dog last seen Ralston and Waterman, San Bernardino, CA 92404

Reported 5 days ago

Osito & Daisy Unknown Dog

LOST PawBoost ID: 73509248


San Bernardino, CA 92404

Brindle both of them one boy and one girl

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Lost Male Dog last seen Barranca, covina, CA, Covina, CA 91723

Reported 1 week ago, updated 5 days ago

Chucky Male Dog

LOST PawBoost ID: 73497975


Covina, CA 91723

He’s a black and beige french bulldog, with spots above his eyes

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Lost Male Dog last seen Grand Prix Ct and Saddlepeak Dr, Fontana, CA 92336

Reported 5 days ago

Princess Male Dog

LOST PawBoost ID: 73508878


Fontana, CA 92336

Beige toy poodle named Princess, around 8lbs, small dog, white patch on chest, fur is maybe 1inch long, very energetic and playful.

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Lost Dog Data for Ontario, CA

There are 883 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 – 2,334,064 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.