118 listings

Missing dogs in Ontario

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Missing dog Colton, photo: Lost dog, North Martinez Lane, 1077, Colton — male white and cream Maltipoo
Lost
Lost dog, North Martinez Lane,...
North Martinez Lane, 1077, Colton
White and cream Maltipoo
Sat, 10/24/2026
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Missing dog Peoria, photo: Lost dog, female, Orchard Street, 9891, Bloomington, Peoria — curly white hair and a brown spot
Lost
Lost dog, female, Orchard Stre...
Orchard Street, 9891, Bloomington
Lexie got out when garage door was opened Has...
Fri, 10/23/2026
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Missing dog Moreno Valley, photo: Lost dog, East Big Range Road, 2804, Moreno Valley — male, 1 year old
Lost
Lost dog, East Big Range Road,...
East Big Range Road, 2804, Ontario
Fawn and black, 1 year old, friendly, playful...
Sat, 10/17/2026
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Missing dog West Covina, photo: Lost dog, North Maplewood Avenue, 595, West Covina — responds to Cinnabun
Lost
Lost dog, North Maplewood Aven...
North Maplewood Avenue, 595, West Covina
White and brown for curly, brown colored ears...
Fri, 10/16/2026
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Missing dog Fontana, photo: Lost dog, male, Ludlow Lane, 15953, Fontana — white Shih Tzu with light brown spots
Lost
Lost dog, male, Ludlow Lane, 1...
Ludlow Lane, 15953, Fontana
White Shih Tzu with Light Brown Spots
Fri, 10/16/2026
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Missing dog San Bernardino, photo: Lost dog, East 13th Street, 196, San Bernardino — friendly male terrier mix
Lost
Lost dog, East 13th Street, 19...
East 13th Street, 196, San Bernardino
His name is Nito/Shadow he is a small terrier...
Thu, 10/15/2026
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Missing dog Jurupa Valley, photo: Lost dog, Rubidoux Boulevard, 3739, Jurupa Valley — male, black, tan and white
Lost
Lost dog, Rubidoux Boulevard,...
Rubidoux Boulevard, 3739, Jurupa Valley
Black, tan, white
Wed, 10/14/2026
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Missing dog Riverside, photo: Lost Dog, 13361 Hildegarde St, Riverside — 10-year-old male pug with a hernia
Lost
Lost Dog, 13361 Hildegarde St,...
13361 Hildegarde St
10 year old pug. Has hernia with lump protrud...
Tue, 10/13/2026
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Missing dog Pomona, photo: Lost dog, South Main Street, 477, Pomona — black female dog with a microchip
Success
Reunited
South Main Street, 477, Pomona
She friendly, is scary right now, dose not ha...
Sat, 10/10/2026
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Missing dog Ontario, photo: Lost dog, East I Street, 909, Ontario — friendly male, may be scared
Lost
Lost dog, East I Street, 909,...
East I Street, 909, Ontario
He is extremely friendly but is likely scared...
Tue, 10/06/2026
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Missing dog Ontario, photo: Lost dog, East I Street, 909, Ontario — male with a white facial stripe
Lost
Lost dog, East I Street, 909,...
East I Street, 909, Ontario
He is brown white a white stripe on his face,...
Mon, 10/05/2026
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Missing dog Glendora, photo: Lost Dog, South Jenifer Avenue, 970, Glendora — Small Brown Male Dog
Lost
Lost Dog, South Jenifer Avenue...
South Jenifer Avenue, 970, Glendora
Small brown dog and he is all brown and my nu...
Sun, 10/04/2026
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Missing dog Chino, photo: Lost dog, Rancho Cucamonga, California, Chino — male, Homecoming Apartments
Lost
Lost dog, Rancho Cucamonga, Ca...
Rancho Cucamonga, California
Lost in the homecoming apartments
Mon, 09/28/2026
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Missing dog Riverside, photo: Lost dog, Burton Street, 10590, Riverside, Riverside — male with a beige-brown coat and dark muzzle
Lost
Lost dog, Burton Street, 10590...
Burton Street, 10590, Riverside
Beige/ brown with dark brown muzzle and some...
Sun, 09/27/2026
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Missing dog Riverside, photo: Lost dog, Mountain Avenue, 11177, Riverside — male black and tan French bulldog
Lost
Lost dog, Mountain Avenue, 111...
Mountain Avenue, 11177, Riverside
Broly is a black and tan French bulldog. He i...
Sun, 09/27/2026
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Missing dog Vista, photo: Lost male dog, Burton Street, 10576, Riverside, Vista — brown with black muzzle and ears
Lost
Lost male dog, Burton Street,...
Burton Street, 10576, Riverside
Our baby Anakin got out from the apartment an...
Listing is boosting
Sun, 09/27/2026
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Missing dog Riverside, photo: Lost dog, Van Buren Boulevard, 3000, Riverside — male teacup Chihuahua with a white coat and brown head
Lost
Lost dog, Van Buren Boulevard,...
Van Buren Boulevard, 3000, Riverside
White coat, brown head small tea cup chihuahu...
Sun, 09/27/2026
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Missing dog Brea, photo: Lost dog, Spruce Tree Drive, 1405, Diamond Bar, Brea — black female dog
Lost
Lost dog, Spruce Tree Drive, 1...
Spruce Tree Drive, 1405, Diamond Bar
Black color charlie king dog was missing arou...
Wed, 09/23/2026
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Missing dog Muscoy, photo: Lost Dog, Highland, California, Los Angeles — Female with White Fur and Pink Nose
Lost
Lost Dog, Highland, California...
San Bernardino, California
She's white fur with pink nose and She's medi...
Mon, 09/21/2026
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Missing dog Moreno Valley, photo: Lost dog, Riverside, California, Moreno Valley — neutered male Rottweiler
Lost
Lost dog, Riverside, Californi...
Riverside, California
Bronx is a neutered male black with tan marki...
Sun, 09/20/2026

Every year, thousands of dogs go missing, and Ontario, California, is no exception. The heartache of losing a beloved pet can be overwhelming. It's estimated that in our city alone, a significant number of dogs are reported lost each year. Understanding the proper steps to take if your dog goes missing can make all the difference in reuniting with your furry friend.


What to do if your dog is lost in Ontario state of California

If you find yourself in the unfortunate situation of losing your dog in Ontario, here are crucial steps you should take:

  • Start searching your neighborhood immediately. Dogs often don't stray too far from home.
  • Call out your dog's name and listen for any barking or movement.
  • Check with your neighbors and ask them to keep an eye out.
  • Visit your local animal shelter and report your lost dog.
  • Post flyers in your area with a clear photo and description of your dog.

Additionally, use social media platforms to spread the word. There are local groups dedicated to lost and found pets where you can share your situation. Networking with other pet owners can dramatically increase your chances of finding your lost dog.


How to write a missing dog ad in Ontario state of California

When creating a missing dog ad, it’s essential to convey the right information effectively. Here’s how you can make your ad stand out:

  • Include a recent photo of your dog that clearly shows its features.
  • Write a concise description including the breed, age, color, and any distinctive markings.
  • State where and when your dog was last seen.
  • Provide your contact information, ensuring it’s easy for people to reach you.
  • Consider offering a reward to encourage more people to help in your search.

Remember, the quicker you act and spread the word, the higher the chances of finding your dog. Keeping calm and organized during this stressful time will help those assisting in your search to remain focused and effective.