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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.

1035 lost dogs in your search

Lost Female Dog last seen University and chicago, Riverside, CA 92507

Reported 3 months ago, updated 2 weeks ago

Sassy Arellano Female Dog

LOST PawBoost ID: 72957106


Riverside, CA 92507

Brown and redish chiwawa female 6 pounds

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Lost Female Dog last seen Stoddard Ave and Fairmount Blvd, Riverside, CA 92501

Reported 8 months ago, updated 2 weeks ago

Abby Female Dog

LOST PawBoost ID: 72410020


Riverside, CA 92501

Tan/black pit mix with white chest, black marks on both sides of neck and black marking on tail with white tip, white spot right above nose; under belly shaved in rectangular shape due to being spayed recently, with small green surgical scar. Was wearing a red collar with white stars.

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Lost Male Dog last seen Food 4 less and bottle n corn liquor store, El Monte, CA 91733

Reported 4 months ago, updated 2 weeks ago

FIRUZE Male Dog

LOST PawBoost ID: 72817436


El Monte, CA 91733

Bump on his chest, white and black whiskers, brown fur is mixed with black

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Lost Male Dog last seen Pasadena and foothill, Azusa, CA 91702

Reported 2 weeks ago, updated 2 weeks ago

Cheeto Male Dog

LOST PawBoost ID: 73300624


Azusa, CA 91702

White short curly

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Lost Male Dog last seen Hacienda Adult School, La Puente, CA 91746

Reported 2 months ago, updated 2 weeks ago

Unknown Male Dog

LOST PawBoost ID: 73083768


La Puente, CA 91746

[UPDATE: The dog in the photo is safe at home. The dog seen on the freeway seems to have been another, similar looking, dog]. Sharing post-not owner. Small Black Dog Mixed Breed, Possible Sighting on 60 FWY. Might be at Crossroads Industrial Parkway area.

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Lost Male Dog last seen Hewes and walnut, Orange, CA 92869

Reported 2 weeks ago, updated 2 weeks ago

Crash Male Dog

LOST PawBoost ID: 73302843


Orange, CA 92869

Beige worry hair 2ft tall not neuterd

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Lost Male Dog last seen Near frandsen street, San Gabriel, CA 91776

Reported 2 weeks ago

Max Male Dog

LOST PawBoost ID: 73302840


San Gabriel, CA 91776

Black and white Chihuahua wearing a chain collar

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Lost Male Dog last seen Nearby christ cathedral, Garden Grove, CA 92840

Reported 2 weeks ago, updated 2 weeks ago

Coco Male Dog

LOST PawBoost ID: 73295061


Garden Grove, CA 92840

Yellowish white dog with tanned ears

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Lost Female Dog last seen torch middle school, West Puente Valley, CA 91746

Reported 3 months ago, updated 2 weeks ago

Cecelia Female Dog

LOST PawBoost ID: 72916231


West Puente Valley, CA 91746

black with a white tummy

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Lost Female Dog last seen Highland and medical center, San Bernardino, CA 92411

Reported 1 month ago, updated 2 weeks ago

Zoey Female Dog

LOST PawBoost ID: 73179434


San Bernardino, CA 92411

Small smoothed coat chihuahua.

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Lost Male Dog last seen Near Nevada Ave El Monte CA 91731, near El Monte High school, Cyber Yogurt,, El Monte, CA 91731

Reported 2 weeks ago

Twister Male Dog

LOST PawBoost ID: 73301229


El Monte, CA 91731

White and light brown

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Lost Female Dog last seen Última vez vista por Philadelphia st y haven ave, E Philadelphia St, CA 91752

Reported 2 weeks ago

Pelusa Female Dog

LOST PawBoost ID: 73301227


E Philadelphia St, CA 91752

Es una perra negra con blanca al momento no traía su medalla de la información en caso de pérdida lo dejó en su collar que te tengo en casa pero su nombre es pelusa la perrita entiende puro español

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Lost Male Dog last seen Colorado/Santa Cruz. Arcadia, Ca, Arcadia, CA 91007

Reported 2 years ago, updated 2 weeks ago

Huey Male Dog

LOST PawBoost ID: 70472204


Arcadia, CA 91007

White multipoo. Very friendly. Tongue hangs out of mouth. 13 years old. Good natured sweetie. Please we just want him back.. Help!! I hope you are ok.

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Lost Female Dog last seen Boardwalk Drive & Challen, Riverside, CA 92503

Reported 6 months ago, updated 2 weeks ago

Happy Female Dog

LOST PawBoost ID: 72620081


Riverside, CA 92503

Tan with white on face and paws wearing a lavender harness

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Lost Male Dog last seen Cupid Way and San Bernardino, Fontana, CA 92335

Reported 3 months ago, updated 2 weeks ago

Jiggly Male Dog

LOST PawBoost ID: 72970754


Fontana, CA 92335

White and black spots

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Lost Female Dog last seen Abraham Lincoln Elementary, Colton, CA 92324

Reported 2 weeks ago, updated 2 weeks ago

Lola Female Dog

LOST PawBoost ID: 73289482


Colton, CA 92324

She’s a friendly pug and has a very curly tail call her by her name Lola and she’ll answer right away she’s black and brown mainly light brown

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Lost Male Dog last seen Wedgeworth dr, Hacienda Heights, CA 91745

Reported 2 weeks ago

Donnol Male Dog

LOST PawBoost ID: 73299642


Hacienda Heights, CA 91745

White maltese

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Lost Female Dog last seen Arrow hwy between Mountain and Benson, Upland, CA 91786

Reported 3 months ago, updated 2 weeks ago

Luna L. Female Dog

LOST PawBoost ID: 72996989


Upland, CA 91786

Black German shepherd with a small white spot on her chest. She's very sweet and she's a big dog.

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Lost Male Dog last seen Columbia and 1400 research Park Dr, Riverside, CA 92507

Reported 2 months ago, updated 2 weeks ago

Cane Male Dog

LOST PawBoost ID: 73091765


Riverside, CA 92507

All white with one brown patch on the right side of face, black nose and 1 brown patch on his back & small brown patch on his tail and black nails

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Lost Female Dog last seen Muscoy and California st, Muscoy, CA 92407

Reported 2 months ago, updated 2 weeks ago

Canella Female Dog

LOST PawBoost ID: 73128448


Muscoy, CA 92407

Fluffy frenchie

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Lost Dog Data for Ontario, CA

There are 1035 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 – 2,301,252 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.