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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.

954 lost dogs in your search

Lost Male Dog last seen Golden ave, Riverside, CA 92505

Reported 1 month ago, updated 2 weeks ago

Peanut Male Dog

LOST PawBoost ID: 72845592


Riverside, CA 92505

Black and white. Wire hair medium small breed

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Lost Female Dog last seen Near s state college blvd, Anaheim, CA 92806

Reported 2 weeks ago

Arya Female Dog

LOST PawBoost ID: 72910617


Anaheim, CA 92806

Australian shepherd and pomeranian mix. Merle color.

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Lost Female Dog last seen Painter, Whittier, CA 90602

Reported 2 weeks ago

Charlotte Female Dog

LOST PawBoost ID: 72909903


Whittier, CA 90602

Cinnamon brown girl small

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Lost Female Dog last seen Amber st & Indiana across the street from the corner 7/11 , Riverside, CA 92503

Reported 2 weeks ago

Kensabe Female Dog

LOST PawBoost ID: 72909045


Riverside, CA 92503

Approach calmly and friendly Mostly likely scared roamed off 2 am

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Lost Male Dog last seen Via sereno Yorba Linda , Yorba Linda, CA 92886

Reported 3 weeks ago, updated 2 weeks ago

Jeter Male Dog

LOST PawBoost ID: 72880781


Yorba Linda, CA 92886

Blonde Shih Tzu 10 pounds

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Lost Female Dog last seen Hill & Basque , Fullerton, CA 92833

Reported 3 months ago, updated 2 weeks ago

Mia Female Dog

LOST PawBoost ID: 72605676


Fullerton, CA 92833

White Maltipoo with a Hawaiian collar on it

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Lost Female Dog last seen Alondra Blvd and Escalona in La Mirada, La Mirada, CA 90638

Reported 2 months ago, updated 2 weeks ago

Blanca Female Dog

LOST PawBoost ID: 72717638


La Mirada, CA 90638

White chihuahua/Terrier mix one black spot low back, purple Hawaiian print collar w/Byte tag and QR code.

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Lost Unknown Dog last seen Ramona Ave and N Western Ave, San Bernardino, CA 92411

Reported 2 weeks ago

Not Sure Unknown Dog

LOST PawBoost ID: 72907864


San Bernardino, CA 92411

Anyone's dog? Apparently he/she has been roaming this street since early morning today. Seems friendly. On W union St in between Ramona ave and n western ave

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Lost Female Dog last seen South Street and Anaheim boulevard, near the Liquor Mart , Anaheim, CA 92805

Reported 2 weeks ago

Luna Female Dog

LOST PawBoost ID: 72907582


Anaheim, CA 92805

Light tan Chihuahua with dark brown eyes and white in her paws

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Lost Male Dog last seen colima rd and fairway dr, Rowland Heights, CA 91748

Reported 1 month ago, updated 2 weeks ago

Er Bao Male Dog

LOST PawBoost ID: 72791184


Rowland Heights, CA 91748

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Lost Female Dog last seen Near Arrow Route, Rancho Cucamonga, CA 91739, Rancho Cucamonga, CA 91739

Reported 2 weeks ago

Baby Female Dog

LOST PawBoost ID: 72907231


Rancho Cucamonga, CA 91739

All white spiky/fluffy fur and face looks like a teddy bear

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Lost Male Dog last seen Los Coyotes Dr, Hillcrest Rd, Ralph B Clark Park, Los Coyotes Country Club, Buena Park, CA 90621

Reported 2 weeks ago

Parker Male Dog

LOST PawBoost ID: 72906830


Buena Park, CA 90621

Maltipoo, 6lbs, light cream/apricot color

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Lost Male Dog last seen Moreno Valley mall , Moreno Valley, CA 92553

Reported 1 month ago, updated 2 weeks ago

Doser Male Dog

LOST PawBoost ID: 72831219


Moreno Valley, CA 92553

Brown and a senior dog

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Lost Male Dog last seen Dollar general 2nd St & waterman avenue, San Bernardino CA , San Bernardino, CA 92408

Reported 2 weeks ago

Booger Male Dog

LOST PawBoost ID: 72906133


San Bernardino, CA 92408

Brindle puppy, all white paws, very BIG paws for just a puppy, walks with an awkward gait due to getting used to his fast growing frame at such a young age! Has sad puppy eyes that usually have some boogers.

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Lost Male Dog last seen Over at the San Bernardino Animal shelter, San Bernardino, CA 92408

Reported 2 weeks ago

Charlie Brown Male Dog

LOST PawBoost ID: 72905975


San Bernardino, CA 92408

Mostly black body with brown legs and white along the top of the nose and end of feet

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Lost Male Dog last seen Devore Animal Shelter, San Bernardino, CA 92407

Reported 2 weeks ago

Krunk Male Dog

LOST PawBoost ID: 72905566


San Bernardino, CA 92407

2yr old 75 lb black pit bull terrier mix with white chest

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Lost Male Dog last seen Miller Ave and Almeria Ave , Fontana, CA 92336

Reported 4 weeks ago, updated 2 weeks ago

Miko Male Dog

LOST PawBoost ID: 72851301


Fontana, CA 92336

Brown and black and grey, under 5 lbs.

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Lost Male Dog last seen Slauson ave Whittier Santa Fe springs area , West Whittier-Los Nietos, CA 90606

Reported 5 months ago, updated 2 weeks ago

Marble Male Dog

LOST PawBoost ID: 72457233


West Whittier-Los Nietos, CA 90606

Gray brown Frenchie

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Lost Male Dog last seen Valley way and 37th st , Jurupa Valley, CA 92509

Reported 10 months ago, updated 2 weeks ago

Brownie Male Dog

LOST PawBoost ID: 71918623


Jurupa Valley, CA 92509

His name is Brownie and he is a mini poodle that has a white spot in the middle of his chest underneath his chin

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Lost Male Dog last seen Near E Victoria St Rialto Ca , Rialto, CA 92376

Reported 4 weeks ago, updated 2 weeks ago

Flacco Male Dog

LOST PawBoost ID: 72860372


Rialto, CA 92376

Frenchie blue collar 💙 gray and spotted

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Lost Dog Data for Ontario, CA

There are 954 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 – 2,229,461 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.