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Puppies and dogs in St Catharines, Ontario

Looking for a puppy or dog in St Catharines, Ontario? Adopt a Pet can help you find a new best friend near you.

A pair of dogs

Adopt a dog in St Catharines, Ontario

These adorable dogs are available for adoption in St Catharines, Ontario. To learn more about each adoptable dog, click on the "i" icon for fast facts, or their photo or name for full details.
Photo of Bart

Bart

Shepherd (Unknown Type) American Bulldog

Male, 2 mos
Niagara Falls, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Shots are up-to-date,
Story
This dog is fostered in the Hamilton areaBart is a happy, playful puppy with the perfect balance of energy and an easygoing personality. He loves to have fun, whether that means chasing after toys, engaging in a game with his people, or simply being part of the action. While he enjoys playtime and exploring the world around him, he also has a laid-back side that makes him an easy puppy to have around.This sweet boy enjoys human companionship and thrives on attention, but he’s also comfortable settling in and relaxing when the excitement winds down. His fun-loving, adaptable nature makes him a great match for a family looking for a puppy who can keep up with adventures while also enjoying quieter moments together.Like all puppies, Bart will benefit from continued training, socialization, and structure as he grows. With his playful spirit, gentle personality, and love for people, he’s sure to grow into a wonderful companion who brings plenty of joy and laughter to his forever home.Can go to forever home after August 1Name: BartBreed: Mixed breed. Mom is approx 45lb short-haired brindle mixed breed, and dad is approx 60lb medium-haired mixed breed - suspect bully/shepherd.Age: D.O.B. June 4, 2026Weight: Expected to be 50-60lb+ full grownSex: Male - to be neutered by 7 months old as per Adoption Agreement at partner clinic in HamiltonGood with dogs: Yes, will need continued socializationGood with cats: Yes, with proper introductions and continued monitoring Good with kids: Yes, will need continued socialization Energy level: Puppy Crate trained: Working on it House trained: Working on it 
Photo of Maxwell

Maxwell

Terrier (Unknown Type, Small)

Male, 3 yrs 1 mo
Niagara Falls, ON
Size
(when grown) Small 25 lbs (11 kg) or less
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
*Fostered in Hamilton*Apply at rebeldogrescue.com*APPLY TO FOSTER TO ADOPTMaxwell is a sweet and gentle 2-year-old Terrier mix. This handsome boy is looking for a patient, loving family who will give him the time he needs to continue building confidence and learning that the world is a safe place. While Maxwell can be timid around new people and situations, he is already showing wonderful signs of trust in his foster home and is beginning to let his affectionate personality shine through. Once he feels comfortable, he loves being close to his people and has all the makings of a loyal little companion.Maxwell would thrive in a calm, quiet home where his adopters understand that confidence grows at its own pace. A fenced yard would be a dream come true for him, as he absolutely loves spending time outdoors exploring and relaxing in the fresh air. He is house trained, well-mannered, settles quietly in his crate, and gets along well with other dogs, happily coexisting and greeting them politely. Maxwell's gentle nature and willingness to trust make him an incredibly rewarding dog to help blossom. If you're looking for a loving companion and are ready to celebrate the small victories along the way, Maxwell may be the perfect addition to your family.Breed: Mixed Breed, Terrier mixAge: ~2 yearsWeight: ~20lbSex: Neutered maleGood with men: Scared, but warms up with timeGood with women: Scared, but warms up with timeGood with kids: 12+ dog savvy, respectful of nervous/timid dogsGood with dogs: Yes, happy to co-existHow does this dog react to meeting new dogs? Neutral - will say hello nicelyGood with Cats: Unknown, not testedCrate training: Yes, Settles quickly and quietly. Has been know to put himself to bed 🥰House trained: YesResource Guarding: None seenWalks on a leash: Yes - loves walks. When he arrived he was nervous on the leash, but now enjoys them!Energy level: Medium - enjoys regular exercise and adventures as well as relaxing calmly in the homeAreas to work on: Needs confidence buildingWhat type of environments would NOT be suitable for the dog? None, this dog would be fine in any environmentAny noted separation anxiety? None notedBarker: Low
Photo of Milhouse

Milhouse

Shepherd (Unknown Type) American Bulldog

Male, 2 mos
Niagara Falls, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Shots are up-to-date,
Story
This dog is fostered in the Hamilton areaThis handsome boy is an active, playful puppy who is always ready for his next adventure. He loves spending time with his people and enjoys being part of whatever is going on, but he’s also confident enough to entertain himself and explore independently. His curious, energetic personality makes every day fun.Like any young puppy, he is still learning about the world and will benefit from a family committed to providing consistent training, structure, and positive reinforcement. He is currently in his typical “mouthy puppy” phase, using his mouth to play and explore, so his new family should be prepared to continue teaching him appropriate outlets for his puppy energy. With patience, guidance, and plenty of toys to chew, he’ll quickly learn good manners.With the right home, this happy, energetic boy is sure to grow into a loyal, well-rounded companion who will bring years of fun, laughter, and unconditional love.Can go to forever home after August 1Name: MilhouseBreed: Mixed breed. Mom is approx 45lb short-haired brindle mixed breed, and dad is approx 60lb medium-haired mixed breed - suspect bully/shepherd.Age: D.O.B. June 4, 2026Weight: Expected to be 50-60lb+ full grownSex: Male - to be neutered by 7 months old as per Adoption Agreement at partner clinic in HamiltonGood with dogs: Yes, will need continued socializationGood with cats: Yes, with proper introductions and continued monitoring Good with kids: Yes, will need continued socialization Energy level: Puppy Crate trained: Working on it House trained: Working on it 
Photo of Patty

Patty

Shepherd (Unknown Type) American Bulldog

Female, 2 mos
Niagara Falls, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Shots are up-to-date,
Story
This dog is fostered in the Hamilton areaPatty is an adorable little puppy with a heart full of love. This sweet girl is happiest when she’s close to her people, soaking up all the attention and affection she can get. She absolutely loves being held and cuddled, and if there’s an opportunity to snuggle into your arms, Patty will happily take it!Her affectionate nature doesn’t stop there - Patty is also a big fan of giving puppy kisses and making sure everyone around her knows just how much love she has to share. She has a gentle, loving personality and thrives on the comfort and companionship of her humans.Like all puppies, Patty will need continued training, socialization, and structure to help her grow into a confident and well-mannered adult dog. With her sweet temperament and endless affection, Patty is sure to become a cherished companion who brings warmth, joy, and plenty of cuddles to her forever family.Can go to forever home after August 1Name: PattyBreed: Mixed breed. Mom is approx 45lb short-haired brindle mixed breed, and dad is approx 60lb medium-haired mixed breed - suspect bully/shepherd.Age: D.O.B. June 4, 2026Weight: Expected to be 50-60lb+ full grownSex: Female - to be spayed by 7 months old as per Adoption Agreement at partner clinic in HamiltonGood with dogs: Yes, will need continued socializationGood with cats: Yes, with proper introductions and continued monitoring Good with kids: Yes, will need continued socialization Energy level: Puppy Crate trained: Working on it House trained: Working on it 
Photo of Selma

Selma

Shepherd (Unknown Type) American Bulldog

Female, 2 mos
Niagara Falls, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Shots are up-to-date,
Story
This dog is fostered in the Hamilton areaSelma is a sweet, affectionate puppy who loves nothing more than soaking up attention from her people. She happily leans in for pets, adores belly rubs, and is always ready for a cuddle after a day of play. While she enjoys spending time with her humans, she’s also wonderfully independent and is just as content entertaining herself with toys or exploring her surroundings.With her gentle nature and easygoing personality, Selma has a great balance of affection and confidence. She’s the kind of puppy who will happily play on her own when you’re busy, then come looking for love and snuggles when it’s time to relax. Selma is sure to make a wonderful companion for a family looking for a loving, well-rounded puppy to grow up with.Can go to forever home after August 1Name: SelmaBreed: Mixed breed. Mom is approx 45lb short-haired brindle mixed breed, and dad is approx 60lb medium-haired mixed breed - suspect bully/shepherd.Age: D.O.B. June 4, 2026Weight: Expected to be 50-60lb+ full grownSex: Male - to be spayed by 7 months old as per Adoption Agreement at partner clinic in HamiltonGood with dogs: Yes, will need continued socializationGood with cats: Yes, with proper introductions and continued monitoring Good with kids: Yes, will need continued socialization Energy level: Puppy Crate trained: Working on it House trained: Working on it 
Photo of Lisa

Lisa

Shepherd (Unknown Type) American Bulldog

Female, 2 mos
Niagara Falls, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Shots are up-to-date,
Story
This dog is fostered in the Hamilton areaLisa is an active, adventurous puppy with a big personality and an even bigger sense of curiosity. Just like her namesake, Lisa Simpson, she’s incredibly smart, brave, and always eager to explore the world around her. She’s often the first to investigate something new and loves keeping herself busy.This clever girl definitely has a mischievous streak! Whether she’s finding a creative way to reach a toy, leading her siblings into playful antics, or making everyone laugh with her puppy shenanigans, Lisa knows how to keep life entertaining. Her intelligence means she’s always thinking, which makes her a fun and engaging companion - but it also means she’ll need plenty of mental stimulation and positive outlets for her energy.Like all puppies, Lisa will benefit from ongoing training, socialization, and consistency. Her future family should be prepared to invest the time and patience needed to help her channel her intelligence into becoming a confident, well-mannered adult dog. With the right guidance, Lisa has all the makings of an incredible companion who will reward her family with endless love, laughs, and loyalty.Can go to forever home after August 1Name: LisaBreed: Mixed breed. Mom is approx 45lb short-haired brindle mixed breed, and dad is approx 60lb medium-haired mixed breed - suspect bully/shepherd.Age: D.O.B. June 4, 2026Weight: Expected to be 50-60lb+ full grownSex: Female - to be spayed by 7 months old as per Adoption Agreement at partner clinic in HamiltonMedical: Lisa fractured her back left leg when she was 10-weeks old. She received corrective orthopedic surgery and should have no long-term effects. Good with dogs: Yes, will need continued socializationGood with cats: Yes, with proper introductions and continued monitoring Good with kids: Yes, will need continued socialization Energy level: Puppy Crate trained: Working on it House trained: Working on it 

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Dog shelters and rescues in St Catharines, Ontario

There are animal shelters and rescues that focus specifically on finding great homes for dogs in St Catharines, Ontario. Browse these rescues and shelters below.

Here are a few organizations closest to you:

Shelter

Humane Society of Greater Niagara

160 Fourth Ave., St. Catharines, ON L2R 6P9

Pet Types: cats, dogs

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Rescue

Rebel Dog Rescue

Niagara Falls, ON L2R 2H6

Pet Types: dogs

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Niagara Action for Animals

94 Welland Avenue, St. Catharines, ON L2R 2N1

Pet Types: cats, dogs, rabbits

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Pets Alive Animal Rescue Niagara Inc.

St. Catharines, ON L2R 6G4

Pet Types: cats, dogs

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Big Paws Rescue

63 McCalla drive, St.Catharines, ON L2N 1A4

Pet Types: dogs

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Bruno Project Canada

St Catherines, ON L2M 6L9

Pet Types: dogs

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BTFA Rescue

Vineland, ON L0R 2E0

Pet Types: dogs

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Beamsville 4Paw Rescue

Beamsville, ON L0R 1B5

Pet Types: cats, dogs, small animals

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Blue Collared Canines

Niagara falls, ON L2E 4L7

Pet Types: dogs

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Niagara Dog Rescue

Niagara Falls, ON L0S 1J0

Pet Types: dogs

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For a comprehensive list of all shelters and rescues, try our search page. We have more than 17,000 organizations in our database with furry pals waiting for a new home!

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Select from the options below to view adoptable puppies and dogs in St Catharines, Ontario and nearby cities.

Popular dog breeds

Affenpinscher Afghan Hound Airedale Terrier Akbash Akita Alaskan Klee Kai Alaskan Malamute American Bulldog American Cocker Spaniel American Eskimo Dog American Hairless Terrier American Pit Bull Terrier American Staffordshire Terrier Anatolian Shepherd Aussiedoodle Australian Cattle Dog Australian Kelpie Australian Shepherd Australian Terrier Basenji Basset Hound Beagle Bearded Collie Beauceron Bedlington Terrier Belgian Laekenois Belgian Malinois Belgian Shepherd Belgian Tervuren Bernedoodle Bernese Mountain Dog Bichon Frise Black Mouth Cur Black and Tan Coonhound Bloodhound Blue Lacy/Texas Lacy Bluetick Coonhound Bolognese Border Collie Border Terrier Borzoi Boston Terrier Bouvier des Flandres Boxer Boykin Spaniel Briard Brittany Brussels Griffon Bull Terrier Bullmastiff Cairn Terrier Canaan Dog Cane Corso Cardigan Welsh Corgi Carolina Dog Catahoula Leopard Dog Caucasian Shepherd Dog Cavachon Cavalier King Charles Spaniel Cavapoo Chesapeake Bay Retriever Chihuahua Chinese Crested Chinook Chiweenie Chow Chow Clumber Spaniel Cockapoo Cocker Spaniel Collie Coonhound Corgi Coton de Tulear Curly-Coated Retriever Dachshund Dalmatian Dandie Dinmont Terrier Doberman Pinscher Dogo Argentino Dogue de Bordeaux Dutch Shepherd English (Redtick) Coonhound English Bulldog English Cocker Spaniel English Setter English Shepherd English Springer Spaniel English Toy Spaniel Entlebucher Feist Field Spaniel Fila Brasileiro Finnish Lapphund Finnish Spitz Flat-Coated Retriever Fox Terrier (Smooth) Fox Terrier (Toy) Fox Terrier (Wirehaired) Foxhound French Bulldog German Pinscher German Shepherd Dog German Shorthaired Pointer German Spitz German Wirehaired Pointer Glen of Imaal Terrier Goberian Golden Retriever Goldendoodle Gordon Setter Great Dane Great Pyrenees Greater Swiss Mountain Dog Greyhound Halden Hound (Haldenstrover) Harrier Havanese Horgi Hovawart Husky Ibizan Hound Icelandic Sheepdog Irish Setter Irish Terrier Irish Water Spaniel Irish Wolfhound Italian Greyhound Italian Spinone Jack Russell Terrier Japanese Chin Jindo Kai Dog Karelian Bear Dog Keeshond Kerry Blue Terrier Kishu Komondor Kuvasz Kyi Leo Labradoodle Labrador Retriever Lakeland Terrier Lancashire Heeler Leonberger Lhasa Apso Löwchen Maltese Maltipoo Manchester Terrier Maremma Sheepdog Mastiff Miniature Bull Terrier Miniature Dachshund Miniature Pinscher Morkie Mountain Cur Munsterlander Mutt Neapolitan Mastiff Newfoundland Norfolk Terrier Norwegian Buhund Norwegian Elkhound Norwegian Lundehund Norwich Terrier Nova Scotia Duck-Tolling Retriever Old English Sheepdog Olde English Bulldogge Otterhound Papillon Parson Russell Terrier Patterdale Terrier (Fell Terrier) Pekingese Pembroke Welsh Corgi Petit Basset Griffon Vendeen Pharaoh Hound Pitsky Plott Hound Podengo Portugueso Pointer Polish Lowland Sheepdog Pomeranian Pomsky Poodle (Miniature) Poodle (Standard) Poodle (Toy or Tea Cup) Portuguese Water Dog Presa Canario Pug Puggle Puli Pumi Rat Terrier Redbone Coonhound Rhodesian Ridgeback Rottweiler Saluki Samoyed Schiller Hound Schipperke Schnauzer (Giant) Schnauzer (Miniature) Schnauzer (Standard) Schnoodle Scottie, Scottish Terrier Scottish Deerhound Sealyham Terrier Shar Pei Sheepadoodle Sheltie, Shetland Sheepdog Sheppit Shepsky Shiba Inu Shih Poo Shih Tzu Silky Terrier Skye Terrier Sloughi St. Bernard Staffordshire Bull Terrier Sussex Spaniel Swedish Vallhund Texas Heeler Thai Ridgeback Tibetan Mastiff Tibetan Spaniel Tibetan Terrier Tosa Inu Treeing Walker Coonhound Vizsla Weimaraner Welsh Springer Spaniel Welsh Terrier Westie, West Highland White Terrier Wheaten Terrier Whippet Wirehaired Pointing Griffon Xoloitzcuintle/Mexican Hairless Yorkie Poo Yorkie, Yorkshire Terrier