American Staffordshire Terrier in profile, photographed outdoors

American Staffordshire Terrier

  • Medium
  • Terrier Group
  • Popularity rank 97

The American Staffordshire Terrier is a stocky, muscular bull-type terrier known for being good-natured, confident, and smart. Agile and people-oriented, the AmStaff thrives as an active, affectionate part of the family.

Height
17 to 19
inches at the shoulder
Weight
40 to 70
pounds, adult
Life expectancy
12 to 16
years, median 14
Senior from
10.5
years, about

Senior starts in the last quarter of a breed's expected lifespan, following the 2019 AAHA canine life stage guidelines. Individual dogs vary.

About the breed

Temperament
Good-natured, confident, smart
Coat
Smooth, short
Origin
United States
Recognized
1936
Popularity, 2015 to 2025 Rank 97 in the latest ranking

2015: rank 77, 2016: rank 81, 2017: rank 83, 2018: rank 85, 2019: rank 86, 2020: rank 82, 2021: rank 81, 2022: rank 87, 2023: rank 95, 2024: rank 77, 2025: rank 97

2015 Lower is more popular 2025

The American Staffordshire Terrier, or AmStaff, is a stocky, muscular bull-type terrier in the Terrier Group. Males and females stand 17 to 19 inches at the shoulder and weigh 40 to 70 pounds, putting them in the medium size class. The head is broad with well-defined jaws and pronounced cheekbones, and the dark, round eyes are set wide apart.

The short, stiff, glossy coat comes in many colors and patterns. AmStaffs move with an agile, graceful, springy gait that shows off the breed's confidence.

Good-natured, confident, and smart, the AmStaff is described by owners as keenly aware of its surroundings, game for anything, and a lovable personality dog around the house. The breed is people-oriented and thrives as part of the family.

The AmStaff was recognized as a breed in the United States in 1936. It carries a reputation shaped by years of stigma, and many owners take on the job of presenting their dog as a friendly ambassador for the breed. With a typical lifespan of 12 to 16 years, this is a long-term companion, so do your homework and find a responsible breeder.

Temperament and needs

Scored 1 to 5 for the breed overall. Individual dogs vary.

  • Affectionate with family5 out of 5
  • Good with young children3 out of 5
  • Good with other dogs3 out of 5
  • Openness to strangers4 out of 5
  • Playfulness3 out of 5
  • Watchdog and protective nature5 out of 5
  • Adaptability3 out of 5
  • Trainability3 out of 5
  • Energy level3 out of 5
  • Mental stimulation needs3 out of 5
  • Barking level3 out of 5
  • Shedding2 out of 5
  • Grooming frequency1 out of 5
  • Drooling1 out of 5

Care

The routines that matter most for this breed. Open one at a time.

Nutrition

Any diet should suit the dog's age, whether puppy, adult, or senior, and factor in activity level, since younger dogs need more food than older, more sedentary ones. Some AmStaffs are prone to gaining weight, so watch calorie intake and check with your vet about any concerns over weight or diet. Keep clean, fresh water available at all times.

A large-breed puppy formula can keep your AmStaff pup from growing too fast. Feeding frequency by life stage:

  • Puppies: at least three meals a day on a regular schedule, usually morning, afternoon, and evening.
  • Adults (typically from 1 year old) and seniors: twice a day, morning and evening.

Whatever the age, always avoid exercise right after feeding, since this can lead to gastric dilatation and volvulus (GDV).

With a commercial diet, the feeding guidelines on the label are a good starting point. A home-cooked diet takes more work to match the calories in each meal to your dog's daily needs, so consider a calorie calculator or a veterinary nutritionist who can formulate a complete diet. Treats are a useful training aid but should make up no more than 10% of daily calories, since too many can cause obesity.

Joint supplements with glucosamine and chondroitin can help support the joints, since the breed can be prone to orthopedic disorders. Omega-3 fatty acids support the joints along with healthy skin and a glossy coat, and come in forms such as chews and oils. Many diets already include omega-3s, so check your dog's food before supplementing.

Grooming

Caring for the AmStaff's short, stiff coat is easy. A quick once-over with a soft bristle brush every week is usually enough to remove dirt and debris, and it distributes skin oils through the coat to help keep it healthy. The coat sheds lightly and isn't prone to matting, making this a low-maintenance breed.

If your AmStaff gets into something messy, a bath is in order. Otherwise, bathing can wait until a doggy smell develops. These dogs can have sensitive skin, and frequent baths can dry out the coat, so bathe no more than every 4 to 6 weeks with a pet-friendly shampoo.

You can clean the ears during bath times, around every 4 to 6 weeks, especially if buildup is heavy. The breed isn't especially prone to ear infections, but stay alert for redness, discharge, head shaking, pawing at the ears, or pain on touch, and consult your veterinarian if you notice any of these.

There's no special eye care required, but AmStaffs can develop distichiasis, an abnormal hair that grows from the eyelid toward the eye and can irritate the cornea. Common signs include squinting, increased blinking and tearing, redness, and corneal abrasions. Watch for these and consult your veterinarian, who can advise on management.

Exercise

The American Staffordshire Terrier is athletic and energetic and needs plenty of exercise. Leaving the dog in the yard all day isn't the answer, because the AmStaff is a people-oriented dog who thrives as part of the family. Daily exercise can be a leashed walk, a short run, or a backyard game of fetch, and long play sessions with their owner build both physical and psychological health.

Strong and athletic, AmStaffs enjoy dog sports such as agility, flyball, rally, obedience, and dock diving. Some are even trained in search-and-rescue and excel at it. Competitive obedience reinforces desired behaviors and gives your dog mental exercise, which the breed needs alongside physical activity.

When exercising outdoors in winter, keep sessions brief. Their short coats aren't suited to cold weather, though a sweater can help.

AmStaffs can be prone to anxiety, which can lead to separation anxiety. The building blocks of a happy dog, exercise, attention, enrichment, and mental stimulation, all help manage it, and a steady routine helps too. They can be vocal in response to strange noises but are generally quiet enough to suit apartments. The right home is an active, social one with regular interactive exercise and attention from the people they love.

Training

Early socialization and puppy training classes are recommended for all breeds, and given the AmStaff's strong will, physical strength, and exuberance, they are a necessity. Socialization matters most in puppyhood, since the social skills a young dog learns carry into adulthood.

The breed's intelligence and desire to please make training fun, and AmStaffs are obedient and relatively easy to train. They can be stubborn and may not respond well to forceful methods, so positive, reward-based training is the way to help this smart breed learn quickly. Some behaviors, such as chewing and digging, can be hard to resolve, and firm, dedicated training helps temper their guarding tendencies. Teaching verbal commands and hand signals, and working in active challenges like agility or chasing balls and Frisbees, helps hold their attention and avoid a bored dog.

Loving and affectionate with their family, AmStaffs can be more reserved with strangers, and socialization helps balance their natural wariness. They are patient and loving with children, but interactions between kids and dogs of any breed always need supervision.

With proper socialization, AmStaffs can get along with other pets, though their strong prey drive can make living with smaller dogs or cats harder. Proper, early introductions are essential with animals of all sizes, and it's up to you to teach your AmStaff that smaller animals aren't something to chase. Dog aggression can develop even in well-socialized AmStaffs, so an AmStaff should never be left alone with other dogs. The breed can live with small animals and young children, but those situations are well-suited to more experienced owners.

Health conditions

10 conditions are documented for the American Staffordshire Terrier.

A predisposition is not a diagnosis. Ask your vet which screenings make sense for your dog's age.

  • AllergiesSkin & Connective Tissues
  • Cerebellar AtaxiaBrain and Spinal Cord
  • Elbow DysplasiaSkeletal
  • Hip DysplasiaSkeletal
  • HypothyroidismHormones
Show all 10 conditions Show fewer
  • L-2-Hydroxyglutaric AciduriaBrain and Spinal Cord
  • Neuronal Ceroid Lipofuscinosis 4AMultisystem
  • Progressive Retinal AtrophyEyes
  • Progressive Retinal Atrophy, crd1Eyes
  • Urate Kidney & Bladder StonesKidney and Bladder

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