The Miniature American Shepherd (MAS) is a relatively new but fast-growing breed that originated in the United States in the late 1960s. Originally developed from small Australian Shepherds, ranchers sought to create a more compact herding dog that retained all the intelligence, agility, and energy of its larger counterpart.
Originally called the Miniature Australian Shepherd, the breed gained popularity on U.S. rodeo circuits and among equestrian communities due to its manageable size and loyalty. In 2011, the breed was officially renamed the Miniature American Shepherd, and it was fully recognized by the American Kennel Club in 2015.
The MAS quickly gained a following for its versatility and charm. Equally at home in the countryside or city, it appeals to active families, agility enthusiasts, and those looking for a compact yet athletic canine partner.
Its popularity has surged in recent years thanks to its manageable size, striking appearance, and strong work ethic.
The MAS is a small to medium-sized herding dog with a beautiful coat and alert, expressive demeanor.
Coat:
• Medium-length, weather-resistant double coat.
• Straight to slightly wavy.
Color:
• Black, blue merle, red, and red merle—often with white markings and/or tan points.
Size:
• Height: 13–18 inches (33–46 cm)
• Weight: 20–40 lbs (9–18 kg)
Head & Expression:
• Clean-cut head with a moderate stop.
• Almond-shaped eyes in various colors—often heterochromatic (two different-colored eyes).
• Intelligent, keen expression.
Ears:
• Triangular and set high, typically folded over.
Body:
• Compact and athletic with a level topline.
• Well-balanced and slightly longer than tall.
Tail:
• Naturally bobbed or docked in many cases (depending on country laws), though some MAS have full-length tails.
MAS dogs are lively, loyal, and extremely intelligent—traits that make them excel in a variety of canine sports and activities.
Highly Intelligent:
• Quick learners who thrive on mental stimulation.
• Easily pick up on commands and complex tasks.
Energetic and Athletic:
• Require regular physical activity and love games, agility, and herding exercises.
• Great for active families and outdoor lovers.
Loyal and Affectionate:
• Form strong bonds with their people and are very affectionate.
• Often described as “velcro dogs” because they want to be near their humans.
Alert and Watchful:
• Excellent watchdogs—vocal when strangers approach but not aggressive.
• Naturally reserved around unfamiliar people unless well socialized.
The MAS is a fantastic choice for those who want the full intelligence and drive of a herding dog in a more manageable size.
Apartment-Friendly Herding Dog:
• Smaller stature means they can do well in apartments, provided they get enough exercise.
Great for Active Families:
• Excellent with children and other pets.
• They thrive when included in daily activities and family outings.
Trainability:
• Among the most trainable dogs—perfect for obedience, rally, agility, and more.
• Eager to please and responsive to positive reinforcement.
Training:
• Start early to channel their smarts and prevent boredom.
• Use consistent, upbeat methods to keep them engaged.
Exercise:
• Needs at least 1–2 hours of activity daily.
• Enjoys walks, hikes, fetch, agility, and herding tasks.
Grooming:
• Brush 2–3 times a week to reduce shedding and prevent mats.
• Seasonal shedding may require more frequent grooming.
Nutrition:
• Feed a high-quality diet suitable for active dogs.
• Monitor weight, especially with lower activity levels.
Companionship:
• Craves interaction and doesn’t enjoy being left alone for extended periods.
• Boredom can lead to destructive behavior if not mentally engaged.
MAS are generally healthy but can be prone to:
• Hip dysplasia
• Progressive retinal atrophy
• Collie eye anomaly
• MDR1 sensitivity (to certain drugs)
• Epilepsy in rare cases
Reputable breeders perform health screenings to reduce risks.
Compared to the Australian Shepherd, the MAS is smaller and easier to manage in tighter living spaces. Unlike the Border Collie, it’s a bit more relaxed and less intense. It’s often confused with the Shetland Sheepdog, but the MAS has a stockier frame and a different herding style.
This breed is perfect for people who want a smart, loyal, and lively companion in a compact package. They require time, training, and activity but return it tenfold with love, loyalty, and companionship.
Best For:
• Active individuals and families
• Agility or dog sport enthusiasts
• Homes with time and space for mental and physical stimulation
Not Ideal For:
• Sedentary households
• Owners who are away for long periods
• Those who don’t want a vocal or high-energy dog
United Pet Club is here to help you bring home the perfect MAS—from choosing the right breeder or rescue to supporting your pup’s development with training and enrichment resources. This compact herder is sure to keep you on your toes—in the best way possible.