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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.

946 lost dogs in your search

Lost Female Dog last seen Indian summer, La Puente, CA 91744

Reported 2 months ago, updated 3 days ago

Teddy Female Dog

LOST PawBoost ID: 73320095


La Puente, CA 91744

White Cockapoo with one eye

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Lost Male Dog last seen Lone Acres Ct, Ringstem in Rancho Cucamonga, Rancho Cucamonga, CA 91737

Reported 4 months ago, updated 3 days ago

Enzo Male Dog

LOST PawBoost ID: 72980668


Rancho Cucamonga, CA 91737

Blue, Tan, Gold

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Lost Female Dog last seen Jurupa ave. And Poplar st, Fontana, CA 92337

Reported 4 months ago, updated 3 days ago

Layla Female Dog

LOST PawBoost ID: 73086611


Fontana, CA 92337

Tan with white and black tail line. Curled tail.

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Lost Female Dog last seen The Diamond Bar Center, Diamond Bar, CA 91765

Reported 3 days ago

Bling Female Dog

LOST PawBoost ID: 73517115


Diamond Bar, CA 91765

Blue Collar, white spot on left toe

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Lost Male Dog last seen Bellegrave and bain, Jurupa Valley, CA 91752

Reported 5 days ago, updated 3 days ago

Oliver Male Dog

LOST PawBoost ID: 73508358


Jurupa Valley, CA 91752

Oliver is a husky / German Shepard mix . He has stitches on his back paws

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Lost Male Dog last seen Near coulston st unit 13, San Bernardino, CA 92408

Reported 1 year ago, updated 4 days ago

Buster Male Dog

LOST PawBoost ID: 71634214


San Bernardino, CA 92408

White and brindle brown French bulldog he has a serial number tattoo his left side

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Lost Female Dog last seen Santa Ana and Alder, Bloomington, CA 92316

Reported 1 month ago, updated 4 days ago

Luna Female Dog

LOST PawBoost ID: 73397521


Bloomington, CA 92316

Chihuahua, black

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Lost Male Dog last seen Francisquito Ave, and Puente Ave, Baldwin Park, CA 91706

Reported 2 years ago, updated 4 days ago

Katsu Male Dog

LOST PawBoost ID: 71207406


Baldwin Park, CA 91706

Tan and white male shiba inu

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Lost Male Dog last seen mayland ave, La Puente, CA 91746

Reported 2 weeks ago, updated 4 days ago

Sami Male Dog

LOST PawBoost ID: 73478380


La Puente, CA 91746

white male maltese wearing grey collar and blue collar

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Lost Female Dog last seen Watermen and baseline, San Bernardino, CA 92404

Reported 4 days ago

Penny Female Dog

LOST PawBoost ID: 73515604


San Bernardino, CA 92404

7 pound blond Chihuahua

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Lost Male Dog last seen E Jurupa & 15 Freeway ONTARIO/FONTANA, Ontario, CA 91761

Reported 2 months ago, updated 4 days ago

Brutus 8/31 Male Dog

LOST PawBoost ID: 73330422


Ontario, CA 91761

LOST DOG - FONTANA E Jurupa Rd near Auto Center Dr - intact male - no collar - responds to Brutus - stunning blue eyes - polite and catchable Please help find him

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Lost Male Dog last seen Pennsylvania and fur st, Colton, CA 92324

Reported 2 months ago, updated 4 days ago

Banks Male Dog

LOST PawBoost ID: 73342089


Colton, CA 92324

Light brown about 7 years old

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Lost Female Dog last seen Sunkist and lincon, Anaheim, CA 92806

Reported 4 months ago, updated 4 days ago

Khloe Female Dog

LOST PawBoost ID: 73001642


Anaheim, CA 92806

One bent ear

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Lost Male Dog last seen Bostick and litton, Colton, CA 92324

Reported 4 days ago

Blanco Male Dog

LOST PawBoost ID: 73514727


Colton, CA 92324

Pretty big dog but super friendly

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Lost Male Dog last seen Archibald & 6th RANCHO CUCAMONGA CA, Rancho Cucamonga, CA 91730

Reported 5 months ago, updated 4 days ago

RC CASH Male Dog

LOST PawBoost ID: 72925561


Rancho Cucamonga, CA 91730

LOST DOG WHOSE FUR BROTHER HAS ALREADY BEEN STRUCK BY CAR RANCHO CUCAMONGA Last seen Archibald & 6th Altered male Goes by Cash Teal colored collar Microchipped Food driven - call his name & say “cookie” There was a pix of a possible sighting but unable to find the post His brother was struck by a vehicle & is struggling at the ER Family devastated & trying to find “Cash” while worrying about “Nacho” If you spot him, CALL:

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Lost Female Dog last seen Center and blain st, Riverside, CA 92507

Reported 4 weeks ago, updated 4 days ago

Baby Female Dog

LOST PawBoost ID: 73408554


Riverside, CA 92507

Little tan and white female chiwawa

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Lost Male Dog last seen Jenifer Ave & Baseline Rd, Glendora, CA 91740

Reported 4 days ago

Bruce Male Dog

LOST PawBoost ID: 73513801


Glendora, CA 91740

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Lost Female Dog last seen D&24th, San Bernardino, CA 92405

Reported 1 week ago, updated 4 days ago

Sophia Female Dog

LOST PawBoost ID: 73492345


San Bernardino, CA 92405

Red approx 23" tall 43 lbs

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Lost Female Dog last seen Linden, Rialto, CA 92377

Reported 4 days ago

Ginger Female Dog

LOST PawBoost ID: 73513662


Rialto, CA 92377

German Shetland mid 5-6 months old loves food and is very smart

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Lost Female Dog last seen Graves Ave & Del Mar Blvd, Rosemead, CA 91770

Reported 1 year ago, updated 4 days ago

Boba Female Dog

LOST PawBoost ID: 72083460


Rosemead, CA 91770

Older German Shephard

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Lost Dog Data for Ontario, CA

There are 946 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.