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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.

990 lost dogs in your search

Lost Female Dog last seen Park Ave. & comer, Riverside, CA 92502

Reported 10 months ago, updated 3 weeks ago

Belle Female Dog

LOST PawBoost ID: 72218953


Riverside, CA 92502

Pomerian mix

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Lost Male Dog last seen Ball and loara, Anaheim, CA 92802

Reported 1 month ago, updated 3 weeks ago

Buddy Male Dog

LOST PawBoost ID: 73191475


Anaheim, CA 92802

Cataract in one eye , graying hair

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Lost Male Dog last seen Victoria middle school, Riverside, CA 92506

Reported 3 weeks ago

Diesel Male Dog

LOST PawBoost ID: 73271127


Riverside, CA 92506

Black with brown spots

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Lost Female Dog last seen Mercado/Orsa, La Mirada, CA 90638

Reported 3 weeks ago

Ginger Female Dog

LOST PawBoost ID: 73270893


La Mirada, CA 90638

Brown and white rat terrier

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Lost Male Dog last seen Osbun rd & e foothill dr, San Bernardino, CA 92404

Reported 3 weeks ago

Mookie Solis Male Dog

LOST PawBoost ID: 73270706


San Bernardino, CA 92404

Black w/ black tounge

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Lost Female Dog last seen Merrill, locust, alder, Fontana, CA 92335

Reported 3 weeks ago

Daisy Female Dog

LOST PawBoost ID: 73270560


Fontana, CA 92335

Brownish red weenier dog

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Lost Female Dog last seen 7th st and Gale ave, Hacienda Heights, CA 91745

Reported 2 months ago, updated 3 weeks ago

Minnie Female Dog

LOST PawBoost ID: 73087975


Hacienda Heights, CA 91745

White with light tan color

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Lost Male Dog last seen Redwood ave and ivy ave, Fontana, CA 92335

Reported 4 years ago, updated 3 weeks ago

Spike Male Dog

LOST PawBoost ID: 68796576


Fontana, CA 92335

Third time posted with a more better picture of Spike and a better description. Small brown dog with an overbite and long legs, He also has a scar on his snout that may have healed by now and also has one on his front right foot. He looks exactly like in the photo, it's frustrating not have been able to find him after that long ago. Have going to the shelter multiple times putting up flyers. Since it's unknown what happened to him please contact immediately if seen.

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Lost Male Dog last seen Baseline rd, Rialto, CA 92376

Reported 4 weeks ago, updated 3 weeks ago

Freddy Male Dog

LOST PawBoost ID: 73242911


Rialto, CA 92376

He’s dominantly white super cheerful has some beige markings on the upper body lower body little bit of black around the eyes with brown he’s a poo. Only two months old wasn’t even fully winged. My son had left the door yard and he got in the front yard while we were sleeping and someone took him out of the yard I really love if we could get our baby back. I would six years for my dog to have a litter for someone to steal our puppy please help.

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Lost Male Dog last seen hibiscus street, Fontana, CA 92335

Reported 3 weeks ago

el chapo Male Dog

LOST PawBoost ID: 73270199


Fontana, CA 92335

golden brown

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Lost Female Dog last seen Near Ceres Fontana CA 92335, Fontana, CA 92335

Reported 4 weeks ago, updated 3 weeks ago

Chikita Female Dog

LOST PawBoost ID: 73232316


Fontana, CA 92335

Chihuahua with long hair gold brown color

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Lost Male Dog last seen 3rd Street, Riverside, CA 92507

Reported 3 weeks ago

Eugene Male Dog

LOST PawBoost ID: 73269048


Riverside, CA 92507

Black Dobermann Mix, All Black, Brown in Front/Face/Chest/Paws WITH A GREEN LEASH AND BLACK COLLAR

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Lost Female Dog last seen Near brookside ave Redlands CA, Redlands, CA 92373

Reported 3 weeks ago

Lola Female Dog

LOST PawBoost ID: 73268430


Redlands, CA 92373

Lola is a young female German Shepherd/Husky mix with a reddish-golden coat, black muzzle, large pointed ears, dark eyes, fluffy tail, and a lighter cream chest/underside. She has a slender, athletic build and was wearing a pink collar when she went missing

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Lost Male Dog last seen Sycamore and second st in rialto, Rialto, CA 92376

Reported 3 weeks ago

Riku Male Dog

LOST PawBoost ID: 73268205


Rialto, CA 92376

Black collar on

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Lost Female Dog last seen Colonial Dr. & Augusta, Fontana, CA 92336

Reported 4 weeks ago, updated 3 weeks ago

Stella Female Dog

LOST PawBoost ID: 73238912


Fontana, CA 92336

White with black spots and black ears

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Lost Female Dog last seen Shady Side Lane and Owl Tree, Lake Mathews, CA 92504

Reported 3 weeks ago, updated 3 weeks ago

Lola Female Dog

LOST PawBoost ID: 73257853


Lake Mathews, CA 92504

Black and tan mini Pin look chihuahua she's blind and wobbly

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Lost Female Dog last seen Jurupa ave, Fontana, CA 92337

Reported 1 month ago, updated 3 weeks ago

Zoey Female Dog

LOST PawBoost ID: 73191590


Fontana, CA 92337

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Lost Male Dog last seen Cedar and Slover, Bloomington, CA 92316

Reported 3 weeks ago

Smokey Male Dog

LOST PawBoost ID: 73265896


Bloomington, CA 92316

Small intact frenchie

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Lost Female Dog last seen Columbia/Lougina, Redlands, CA 92374

Reported 2 months ago, updated 3 weeks ago

Gracie Female Dog

LOST PawBoost ID: 73140033


Redlands, CA 92374

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Lost Male Dog last seen Indian hill Pomona, Pomona, CA 91767

Reported 3 weeks ago

Grizzly Male Dog

LOST PawBoost ID: 73265048


Pomona, CA 91767

Has scar on right back leg

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Lost Dog Data for Ontario, CA

There are 990 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 – 2,301,239 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.