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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.

953 lost dogs in your search

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

Reported 5 days ago

Bonbon Male Dog

LOST PawBoost ID: 72946268


Riverside, CA 92505

White pomeraninan

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

Reported 5 days ago

Bon Bon Male Dog

LOST PawBoost ID: 72946165


Riverside, CA 92505

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Lost Female Dog last seen Fifth st & Soldano , Azusa, CA 91702

Reported 3 weeks ago, updated 5 days ago

Kimba Female Dog

LOST PawBoost ID: 72871393


Azusa, CA 91702

Pug

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Lost Male Dog last seen Orange Grove , Arcadia, CA 91006

Reported 5 days ago

Kenzo Male Dog

LOST PawBoost ID: 72945615


Arcadia, CA 91006

He is a small toy poodle with a red/brown ish color.

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Lost Male Dog last seen Stirrup and Great Bend Drive  Diamond Bar CA, Diamond Bar, CA 91765

Reported 1 year ago, updated 5 days ago

Peewee Male Dog

LOST PawBoost ID: 71628776


Diamond Bar, CA 91765

20lb Brown color Rat Terrier with white paws, white tipped tail, and white strip on his forehead.

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Lost Male Dog last seen Central Ave/Phillips Montclair ca, Montclair, CA 91763

Reported 2 months ago, updated 5 days ago

Petey (babydoo) Male Dog

LOST PawBoost ID: 72752726


Montclair, CA 91763

szu/Maltese Mix **1 eye 14yrs old

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Lost Female Dog last seen Eucled - trask Garden Grove ca 93843, Garden Grove, CA 92840

Reported 1 month ago, updated 5 days ago

Chiquita Female Dog

LOST PawBoost ID: 72834901


Garden Grove, CA 92840

Perra pequeña chihuahua color canela con patas delanteras blancas estilo botitas

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Lost Male Dog last seen Near klingerman street , El Monte, CA 91733

Reported 2 weeks ago, updated 5 days ago

bon bon Male Dog

LOST PawBoost ID: 72898886


El Monte, CA 91733

just got a hair cut friendly and he is almost blind

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Lost Male Dog last seen Washington , Riverside, CA 92504

Reported 5 days ago

Rudy Male Dog

LOST PawBoost ID: 72944361


Riverside, CA 92504

Great Dane - black/grey/white

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Lost Male Dog last seen Jefferson st & Cleveland Ave, Riverside, CA 92504

Reported 5 days ago

Reece Male Dog

LOST PawBoost ID: 72944306


Riverside, CA 92504

Mini Dachshund Brown Brindle w/chest & 1 blue eye & 1 brown eye

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Lost Female Dog last seen Near , Riverside, CA 92509

Reported 5 days ago

Pearl Female Dog

LOST PawBoost ID: 72944236


Riverside, CA 92509

White black strikes on back one brown eye one blue eye

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Lost Female Dog last seen Country Village 55 and Over apts, Jurupa Valley, CA 91752

Reported 5 days ago

Violet Female Dog

LOST PawBoost ID: 72944211


Jurupa Valley, CA 91752

Small white dog about 10-15 lbs.

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Lost Female Dog last seen Roswell Ave & E Grand Ave, Pomona, CA 91766

Reported 5 days ago

Moni Female Dog

LOST PawBoost ID: 72943920


Pomona, CA 91766

White/tan medium sized

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Lost Female Dog last seen By grove and walnut , Ontario, CA 91761

Reported 5 days ago

Cookie Female Dog

LOST PawBoost ID: 72943911


Ontario, CA 91761

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Lost Male Dog last seen Basetdale Avenue, La Puente, CA 91746

Reported 7 months ago, updated 5 days ago

Goofy Boy Male Dog

LOST PawBoost ID: 72226194


La Puente, CA 91746

All white, fluffy, feathery fur. He has bent ears and a showy, plumy tail He holds high over his back. He squints his right eye quite a bit from being born with entropion rolling eyelids, though he underwent surgery, he still will squint at times. He has dark eyes. He has pink and black gums. He is neutered and received his other vaccinations via original owner. He also has his Rabies vaccine which is good until April 11, 2026. This pup is not aggressive , but aloof and not highly sociable, more wary. He is still a baby . He has his personality from his parentage. Tibetan Mastiff and American Akita. He is comfortable with people that know him and the dogs he grew with. Due to his size , he may appear scary and his eyes are noticeable but he is less than a year old and not a threat. He had just been adopted out with his sister Helena and broke out just about the next day of his new residence. He is microchipped. I am hoping he is safe and his new owner is searching around through local areas for him as well. He was found by someone on Facebook , but he left. If anyone sees him, please call Animal Control. He is microchipped and he will be reunited via this way. He most likely will not go with anyone willingly, but he has been gone for some time. I am hoping he is not hurt or dead.

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Lost Female Dog last seen Massachusetts Ave San Bernardino 92411, San Bernardino, CA 92405

Reported 5 days ago

Daisy Female Dog

LOST PawBoost ID: 72943769


San Bernardino, CA 92405

Black, brown, silver hair

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Lost Female Dog last seen Washington st meadow lane and Cooley ln, Colton, CA 92324

Reported 1 week ago, updated 5 days ago

Bella Female Dog

LOST PawBoost ID: 72934835


Colton, CA 92324

Tanish and white she has a white spot on top of her head she’s friendly weights about 12 lbs

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Lost Male Dog last seen La Puente Hills Mall, Hacienda Heights, CA 91745

Reported 1 month ago, updated 5 days ago

Badass Male Dog

LOST PawBoost ID: 72805135


Hacienda Heights, CA 91745

Small grey Chihuahua

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Lost Female Dog last seen Mt.Vernon Ave/ La Cadena, Colton, CA 92324

Reported 4 weeks ago, updated 5 days ago

Tiny Female Dog

LOST PawBoost ID: 72858269


Colton, CA 92324

Shes black on top and brown undercoat

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Lost Female Dog last seen Cadmium Court and Sapphire Road, Chino Hills, CA 91709

Reported 5 years ago, updated 5 days ago

Roxy Female Dog

LOST PawBoost ID: 66773505


Chino Hills, CA 91709

!2 year old Boxer mix, muzzle graying with age, wearing an orange web collar and red, white & black plaid sweater. She got out of the garage. Not used to being outside in the cold and wet weather. Has some medical issues.

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Lost Dog Data for Ontario, CA

There are 953 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 – 2,229,080 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.