Miniature American Shepherd
| Size at withers | 33-46 cm |
|---|---|
| Weight range | 9-18 kg |
| Life expectancy | 12-13 years |
| Size class | Small–Medium (10–25 kg) |
| Normal resting vitals | Heart rate 70–120 bpm · Respiration 15–30/min · Temperature 38.3–39.2 °C |
| Temperament | Bright, biddable, energetic; loyal and trainable; a keen small herder |
| Common health issues | MDR1 drug sensitivity, progressive retinal atrophy, collie eye anomaly, hip dysplasia, cataracts |
| Exercise needs | High - 60+ min/day plus training |
| Climate & housing suitability | Poor to moderate - a medium double coat; smaller size helps but heat and grooming remain issues. |
| Owner notes | A compact herder, not a toy; MDR1 testing is important before common medications. |
Origin and purpose
Herding (AKC). Origin: United States; small stock-dog bred down from the Australian Shepherd.
A compact herder, not a toy; MDR1 testing is important before common medications.
What a breed was built to do explains most of what it will do in your home. A dog selected for hundreds of years to run, guard, herd, or hunt does not stop wanting to because it now lives in an apartment — the drive is the breed, and the owner's job is to give it somewhere to go.
Temperament and training
Stated temperament: Bright, biddable, energetic; loyal and trainable; a keen small herder
This is a biddable breed that wants to work with you, which makes it forgiving of a novice's mistakes — but biddability is not the same as needing no training. Reward-based training, started early and kept short and frequent, is what these dogs thrive on. Punishment-based methods damage exactly the willingness that makes the breed easy.
Conditions this breed is predisposed to
MDR1 (ABCB1) drug sensitivity
Cataracts
Collie eye anomaly
Hip dysplasia
Progressive retinal atrophy
Health screening — what to test, and when
| Screen for | Test | When |
|---|---|---|
| Cataracts | Ophthalmologist eye examination | Annually |
| Collie eye anomaly | Ophthalmologist examination of puppies, plus DNA test | Puppies at 6–8 weeks — the window matters; DNA once |
| Hip dysplasia | Radiographic hip evaluation (hip scoring) | Once at 12–24 months; earlier if lame |
| MDR1 (ABCB1) drug sensitivity | DNA test (cheek swab) | Once, ideally before the dog ever needs medicating — then tell every vet |
| Progressive retinal atrophy | Ophthalmologist eye examination, plus DNA test where one exists for the breed | DNA once; eye examination annually |
Every dog, every breed: an annual health examination (twice yearly from seven years), body-condition scoring at each visit, dental assessment, year-round parasite control, and the core vaccinations.
For breeders — test before you mate
- Cataracts — Ophthalmologist eye examination
- Collie eye anomaly — Ophthalmologist examination of puppies, plus DNA test
- Hip dysplasia — Radiographic hip evaluation (hip scoring)
- MDR1 (ABCB1) drug sensitivity — DNA test (cheek swab)
- Progressive retinal atrophy — Ophthalmologist eye examination, plus DNA test where one exists for the breed
Feeding
The most forgiving size to feed. A good-quality complete diet appropriate to the life stage, measured with a cup or scales rather than judged by eye, split into two meals a day. Weigh the food; guessing is how dogs get fat. Treats counted within the daily allowance, not added on top.
Exercise and enrichment
Stated requirement: High - 60+ min/day plus training
A high-energy dog needing substantial, committed daily exercise plus mental work. Do not take this breed on unless the daily commitment is realistic on your worst week, not your best one.
Climate and living conditions
Stated suitability: Poor to moderate - a medium double coat; smaller size helps but heat and grooming remain issues.
Ageing and senior care
Life expectancy: 12-13 years. This dog is a senior from around 8–9 years, at which point wellness examinations should move to twice a year and senior blood and urine screening begins. Watch for the gradual onset of arthritis, dental disease, and the endocrine conditions of middle age. Senior care →
Before you take one home
- Ask the breeder for the health-test results listed above — for BOTH parents, on paper, before you pay a deposit. A breeder who has done the tests will be proud to show you; one who deflects, or who tells you the tests are unnecessary in this line, is telling you what you need to know.
- Consider adoption. Shelters and rescues have dogs of every kind, including purebreds, and the local native or landrace dog is often healthier, better adapted to its climate, and more in need of a home than almost anything you can buy. See Part XII.
