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Miniature American Shepherd: The Complete Breed Guide

The Miniature American Shepherd is a smart, athletic herding dog in a compact package. Recognized by the AKC as its own breed in 2015, the MAS was developed by selectively breeding smaller Australian Shepherds -- keeping the intelligence, drive, and versatility of the Aussie while scaling it down to 13-18 inches and 20-40 pounds.

Before AKC recognition, these dogs were commonly called "Mini Aussies" -- and many people still use that name. The breed club pushed for a distinct identity, but the genetics are the same. What you get is a high-energy herding dog that excels at agility, obedience, and being your constant shadow. They are not a lap dog despite their size. If you want a small dog that acts like a big dog, the MAS delivers.

Miniature American Shepherd Quick Facts

BreedMiniature American Shepherd
AKC GroupHerding (recognized 2015)
Size13-18 inches, 20-40 lbs
Lifespan12-13 years
CoatMedium-length double coat
TemperamentIntelligent, active, loyal, trainable
ExerciseHigh -- 60-90 min daily
Good with kidsYes -- with proper socialization
TrainabilityVery high -- excels at agility and obedience

Is a Miniature American Shepherd Right for You?

A MAS might be right if you:

  • Want a highly trainable, intelligent companion
  • Lead an active lifestyle -- hiking, running, agility
  • Can commit to 60-90 minutes of daily exercise
  • Want a smaller dog with big-dog personality and drive
  • Have experience with herding breeds or high-energy dogs
  • Are prepared for regular grooming and heavy shedding

A MAS might not be right if you:

  • Want a low-energy lap dog
  • Work long hours and cannot provide enough exercise
  • Cannot tolerate heavy shedding twice a year
  • Are a first-time dog owner with no training experience
  • Want a dog that is calm and independent
  • Are not willing to test for MDR1 before any vet visits
How much does a Miniature American Shepherd cost?

Puppy price, food, vet bills, grooming, and supplies -- see the real first-year cost breakdown.

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RedTree Ridge Minis

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Frequently Asked Questions

Are Mini American Shepherds the same as Mini Aussies?
Technically no. The Miniature American Shepherd was recognized by the AKC as its own breed in 2015, but they share lineage with the Australian Shepherd. Both were bred down from smaller Australian Shepherds, and many dogs registered as "Mini Aussies" are genetically the same dogs. "Mini Aussie" is an informal name that predates AKC recognition -- the breed club chose "Miniature American Shepherd" to distinguish it as a separate breed rather than a size variety of the Australian Shepherd.
How big do Miniature American Shepherds get?
Miniature American Shepherds stand 13-18 inches tall at the shoulder and weigh 20-40 pounds. Males are typically 14-18 inches and females 13-17 inches. They are a true small-to-medium breed -- noticeably smaller than a standard Australian Shepherd (18-23 inches) but not a toy or teacup dog. If a breeder is advertising dogs under 13 inches, they are breeding outside the standard.
Are Miniature American Shepherds good apartment dogs?
They can adapt to apartment living, but do not underestimate their energy. This is a herding breed in a small package -- they need 60-90 minutes of real exercise daily plus mental stimulation like puzzle toys, trick training, or agility work. A bored MAS in an apartment will bark, chew, and find creative ways to destroy things. If you work long hours and cannot commit to daily exercise, this is not the breed for you regardless of living space.
Do Miniature American Shepherds shed a lot?
Yes. They have a medium-length double coat that sheds year-round and blows out heavily twice a year during seasonal coat changes (spring and fall). During blowouts, you will find hair everywhere -- on furniture, clothes, and in places you did not know hair could reach. Regular brushing (2-3 times per week, daily during blowouts) helps manage it, but if you cannot tolerate dog hair in your life, this is not your breed.
What health issues are common in Miniature American Shepherds?
The most critical issue is the MDR1 gene mutation (Multi-Drug Resistance 1), which makes affected dogs dangerously sensitive to common medications including ivermectin, loperamide, and some anesthetics. Every MAS should be tested for MDR1 before any medication is administered -- this is not optional. Other common health concerns include hip dysplasia, progressive retinal atrophy (PRA), hereditary cataracts, and epilepsy. A responsible breeder will test for MDR1, do OFA hip and eye evaluations, and be transparent about health history in their lines.