Personality
Despite the name, Australian Shepherds were developed primarily in the western United States as herding dogs for the ranching industry. They're extremely intelligent, highly energetic, and driven to work - traits that make them exceptional sport and working dogs, and challenging pets if those needs aren't met.
An Aussie who gets two hours of varied exercise and regular training is a focused, happy, deeply bonded companion. One who doesn't gets anxious, destructive, and obsessive - often directing their herding instincts at children, other pets, or cyclists. The same intelligence and drive that makes them excel at agility and obedience makes them difficult to live with without an outlet.
They form very strong bonds with their people, sometimes to the point of following them from room to room. Separation anxiety is not uncommon. They can be reserved with strangers and are often not the type to welcome enthusiastically every person who walks through the door.
Exercise
Two hours daily is the floor, not the target. And it needs to be real exercise - varied terrain, off-lead running where safe, activities that use their brain as well as their body. Dog sports (agility, obedience, flyball, herding trials) provide exactly the kind of engagement Aussies thrive on.
Mental stimulation is as important as physical exercise. A dog who's had a good training session and an enrichment activity will be more settled than one who's had three hours of straight walking without any cognitive engagement.
Be honest with yourself about lifestyle before getting an Australian Shepherd. If you work full-time without doggy day care or a dog walker, if you can't provide consistent training and off-lead exercise, this is not the right breed.
Weight and Feeding
Adult weight ranges widely - 16–32 kg, with males at the upper end and miniature Aussies at the lower. Feed a quality complete diet appropriate to their activity level. Given their exercise demands, high-energy diets are often appropriate for working or sport dogs.
Health
Australian Shepherds carry several inherited conditions that buyers should screen for.
MDR1/ABCB1 gene mutation is one of the most important considerations in Aussies. This mutation affects the blood-brain barrier's ability to pump certain drugs out, making affected dogs dangerously sensitive to specific medications including ivermectin (used in some parasite treatments), loperamide (Imodium), several chemotherapy drugs, and others. The mutation is common in herding breeds - studies suggest around 50% of Australian Shepherds carry at least one copy, with homozygous affected dogs (two copies) being the most sensitive.
DNA testing is available and relatively inexpensive. Know your dog's MDR1 status before any medication is prescribed.
Collie eye anomaly (CEA) is an inherited eye condition causing abnormal development of the choroid, sclera, and occasionally the retina. Severity ranges from minor to blindness. DNA testing is available; both parents should be tested clear or carrier status known.
Progressive retinal atrophy (PRA) - several forms relevant to Aussies have DNA tests available. Breeding dogs should be tested. Track Progressive Retinal Atrophy →
Hip dysplasia: BVA hip scoring for breeding dogs is recommended. Track Hip Dysplasia →
Hereditary cataracts: DNA tests available. Track Cataracts →
Epilepsy occurs at elevated rates in Australian Shepherds. No DNA test currently available; breeding animals should not have a history of seizures. Track Epilepsy →
Deafness: more common in merle-to-merle breedings (double merle puppies) - responsible breeders never breed two merles together.
Grooming
A medium-length double coat that sheds moderately year-round and heavily twice yearly. Brushing two to three times weekly prevents matting, particularly in the "mane" area around the neck and the feathering. Daily brushing during seasonal moults. A de-shedding tool in spring is almost essential.
They don't need professional grooming in the way curly-coated breeds do, but occasional trimming around the feet and sanitary areas is useful.
Common Conditions to Watch
- MDR1 status: know it before any medication - critical
- Eye changes (cloudiness, discharge, apparent vision problems): CEA/PRA monitoring
- Epileptic episodes: note date, duration, description, preceding activity
- Hip stiffness or lameness: dysplasia can develop in young adults
- Anxiety: monitor for separation distress, compulsive behaviours, redirected herding
Frequently Asked Questions
What is MDR1 and why does it matter for Australian Shepherds? MDR1 is a gene mutation common in herding breeds that makes affected dogs extremely sensitive to certain medications. Even standard doses of some drugs - including certain antiparasitic treatments and anaesthetic drugs - can cause neurological toxicity, collapse, or death in affected dogs. DNA testing reveals your dog's status. Knowing it is not optional; it should be done before any new medication is prescribed.
Are Australian Shepherds good family dogs? With the right family, yes. They're loyal, trainable, and affectionate. The right family is one that exercises them seriously, trains consistently, and can handle a high-energy, intelligent dog. The wrong family is one who expects them to settle for minimal activity or who has young children the dog will try to herd.
Do Aussies bark a lot? More than some breeds. They're alert and vocal, and they may bark at movement, strangers, or things that concern them. Training recall on barking from an early age helps. An under-exercised Aussie barks more.
How long do Australian Shepherds live? 12–15 years - good for a medium-large dog. They tend to remain active and healthy well into their early teens when well-managed. The main thing that shortens this is the epilepsy and, rarely, early-onset conditions.