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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.

1028 lost dogs in your search

Lost Male Dog last seen 53rd st, Riverside, CA 92509

Reported 1 month ago, updated 5 days ago

Ekko Male Dog

LOST PawBoost ID: 73017099


Riverside, CA 92509

Mix Boston terrier

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

Reported 9 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 Female Dog last seen Pigeon Pass and Box Sorings, Moreno Valley, CA 92557

Reported 4 months ago, updated 5 days ago

Marley Female Dog

LOST PawBoost ID: 72644126


Moreno Valley, CA 92557

Blue and white Kane Corso pitbull mix

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Lost Male Dog last seen Helena Ave & Brynhust Dr, Riverside, CA 92504

Reported 3 weeks ago, updated 5 days ago

Lincoln Male Dog

LOST PawBoost ID: 73084099


Riverside, CA 92504

Black and tan terrier mix

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Lost Male Dog last seen Colorado Blvd/ Santa Cruz Rd, Arcadia, CA 91006

Reported 2 years ago, updated 5 days ago

Huey Male Dog

LOST PawBoost ID: 70542400


Arcadia, CA 91006

White Maltipoo. His fur could have patches of rust if he has been crying or chew on himself. Huey is 13 years old. Tongue sticks out of side of mouth. Tail curls when confident. Please help us bring him. Gentle soul. PLEASE CALL ME day or night with any leads

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Lost Male Dog last seen Near n Davidson Ave, San Bernardino, CA 92411

Reported 5 days ago

Max Male Dog

LOST PawBoost ID: 73149715


San Bernardino, CA 92411

Maltipoo curly hair white

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Lost Male Dog last seen Near Rudy Oliveras Ct, Colton, CA 92324, USA, San Bernardino, CA 92401

Reported 6 days ago, updated 5 days ago

Max Male Dog

LOST PawBoost ID: 73146736


San Bernardino, CA 92401

K9

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Lost Female Dog last seen Pathway Church, Riverside, CA 92503

Reported 11 months ago, updated 5 days ago

Sydney Female Dog

LOST PawBoost ID: 71892780


Riverside, CA 92503

Black tan white long fluffy tail long legs

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Lost Female Dog last seen La Habra area, La Habra, CA 90631

Reported 5 days ago

Luna Female Dog

LOST PawBoost ID: 73149557


La Habra, CA 90631

She is about 2 years old female , had a greenish collar. Her name is luna. Not spayed.

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Lost Female Dog last seen Willow and Cornell in Rialto, Rialto, CA 92376

Reported 7 months ago, updated 5 days ago

Yillo Female Dog

LOST PawBoost ID: 72402100


Rialto, CA 92376

Small black and white shih-tzu. Her hair was short and she had on a red dress when we lost her.

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Lost Male Dog last seen 3rd and sierra near Manuel p Moreno jr park, San Bernardino, CA 92410

Reported 3 months ago, updated 5 days ago

Ruby Male Dog

LOST PawBoost ID: 72766665


San Bernardino, CA 92410

Small Brown and white spots Chihuahua

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Lost Male Dog last seen Banyan and East, Rancho Cucamonga, CA 91739

Reported 1 week ago, updated 5 days ago

Remy Male Dog

LOST PawBoost ID: 73140954


Rancho Cucamonga, CA 91739

Seal grey Italian greyhound

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Lost Male Dog last seen cogswell elementary school, El Monte, CA 91733

Reported 1 year ago, updated 5 days ago

Tobi Male Dog

LOST PawBoost ID: 71324196


El Monte, CA 91733

Brown eyes, beige fur, playful and trusting wavy fur green tattoo on stomach cause he's fixed

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Lost Female Dog last seen Iowa, la cadence, Colton, CA 92324

Reported 1 week ago, updated 5 days ago

Baby Dodo Female Dog

LOST PawBoost ID: 73140277


Colton, CA 92324

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Lost Male Dog last seen Orangethorpe and Lemon st, Fullerton, CA 92832

Reported 3 weeks ago, updated 5 days ago

Chico Male Dog

LOST PawBoost ID: 73073112


Fullerton, CA 92832

White with tan spots

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Lost Male Dog last seen Francis, Chino, CA 91710

Reported 5 days ago, updated 5 days ago

Clyde Male Dog

LOST PawBoost ID: 73148614


Chino, CA 91710

Black snout brown body small with big ears

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Lost Male Dog last seen Fredrick, Moreno Valley, CA 92557

Reported 5 days ago

Fridae Male Dog

LOST PawBoost ID: 73149325


Moreno Valley, CA 92557

All black with a little white under belly has a blue collar 💙 his name if fridae

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Lost Female Dog last seen Taylor st & Capital dr, Riverside, CA 92503

Reported 2 weeks ago, updated 5 days ago

Teresita Female Dog

LOST PawBoost ID: 73105623


Riverside, CA 92503

Black with white hair small

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Lost Male Dog last seen La Sierra and Arlington, Riverside, CA 92505

Reported 5 days ago

Luke Male Dog

LOST PawBoost ID: 73149101


Riverside, CA 92505

Belgian Malinois

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Lost Male Dog last seen Stoddard and 31st, San Bernardino, CA 92405

Reported 2 weeks ago, updated 5 days ago

Sergeant Male Dog

LOST PawBoost ID: 73109509


San Bernardino, CA 92405

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Lost Dog Data for Ontario, CA

There are 1028 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 – 2,268,730 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.