Australian Shepherd Care Guide: Energy, Exercise, and the Genetics That Should Drive Every Decision

By Jessica Ennis, DVM, CVA

Breed Care Guides · August 21, 2026 · 6 min read

An Australian Shepherd care guide built around one conviction — screen the genetics first, then build the exercise plan, not the other way around.

An Australian Shepherd named Copper came into my exam room at eleven months old because his owners were, in their words, “losing the house.” He’d chewed a door frame down to the stud, herded their toddler into corners, and once cleared a four-foot fence to follow the mail carrier down the block. He was getting a thirty-minute leash walk twice a day and nothing else. His owners assumed they had a behavior problem. What they actually had was a working dog running a caloric and cognitive deficit, and the first thing I did before we talked training was ask about his hips, his eyes, and whether anyone had ever pulled his MDR1 status. That order — genetics and structure before the exercise prescription — is the whole argument of this guide.

My verdict, stated up front: before you build an Australian Shepherd’s exercise and enrichment plan, get three pieces of information — MDR1 drug-sensitivity status, hip screening history if you have access to it, and a baseline sense of the dog’s individual drive — because the standard “give them 1-2 hours of hard exercise” advice can be actively wrong for a dog you haven’t screened.

Why exercise advice for this breed is incomplete without genetics first

Most Australian Shepherd guides start and end with energy burn: walk them, run them, give them a job. That’s not false. Aussies were bred as working ranch dogs and Chewy and other breed resources consistently describe them as needing substantial daily activity to avoid destructive or anxious behavior — the pattern Copper’s owners were living through. But treating exercise as the whole plan skips the two things that determine whether that exercise is safe and sustainable: the dog’s drug-sensitivity genetics and the state of its joints and spine.

Here’s the mechanism that gets glossed over. Roughly half of Australian Shepherds carry at least one copy of the MDR1 gene mutation, a four-base-pair deletion in the ABCB1 gene that disables part of the P-glycoprotein pump normally guarding the blood-brain barrier, according to the Veterinary Genetics Laboratory at UC Davis. In an affected dog, drugs like ivermectin at deworming doses can cross into the brain instead of being pumped back out, producing tremors, ataxia, excess salivation, and in severe cases seizures or respiratory arrest — a toxicity documented directly in an Australian Shepherd in a case report in the Journal of Veterinary Internal Medicine. This isn’t a footnote. It changes which heartworm preventives, sedatives, and anti-diarrheal drugs are safe for that individual dog for the rest of its life, and a cheek-swab test settles the question before it becomes an emergency.

The counterargument I take seriously — and where I still land

The reasonable pushback is that most Aussie owners will never need general anesthesia or high-dose ivermectin urgently enough to justify testing every dog. I understand the instinct to save the cost. But the failure mode isn’t rare in the way people assume — it shows up at spay and neuter visits, at emergency clinics that don’t know the dog’s history, and in owners who buy over-the-counter dewormer without reading the label. I still recommend MDR1 testing for essentially every Aussie because the test is inexpensive, done once, and the downside of skipping it is a dog in status epilepticus in an ER that has no idea why. That’s not a hypothetical risk profile I’m willing to talk clients out of.

What “energy needs” actually means, broken into structure and duration

Breed sources converge on a working range: Australian Shepherds generally need somewhere around one to two hours of real activity a day, not just yard time, per breed guides like Hepper. What matters more than the total minutes is the composition.

• Physical output that raises heart rate — a brisk trot, not a stroll, sustained long enough to actually tire the dog
• Cognitive load — scent work, pattern games, or structured training that taxes decision-making, not just muscles
• A job-shaped task, even an invented one — carrying a pack, herding balls, running an agility sequence — because this breed was selected for purposeful work, not generic calorie burn

A dog that gets an hour of physical exercise but zero mental work often still looks under-exercised. That’s the piece owners like Copper’s family miss most often.

I’ve watched this play out differently in a nine-year-old Aussie named Piper, whose owner came to me not for behavior problems but for a subtler complaint: Piper was reluctant to jump into the car, slower on stairs in the evening, and had started sitting instead of standing during long grooming sessions. She weighed 52 pounds, was otherwise bright-eyed, and her owner almost dismissed it as “just getting older.” I asked about her hip screening history — there wasn’t one, because she’d been adopted as an adult with no paperwork. We radiographed her, found moderate hip changes consistent with dysplasia, and rebuilt her routine around lower-impact conditioning: swimming, flat-ground trotting, no more frisbee leaps. Eighteen months later she was still herding the backyard chickens, just on her own terms.

Hips and spines: the two structural risks that should shape the plan, not follow it

Hip dysplasia affects an estimated 15 to 20 percent of Australian Shepherds by some breed-health estimates, arising from a mix of genetic loading and developmental factors like growth-rate and exercise intensity in puppyhood, according to the Australian Shepherd Health & Genetics Institute. Responsible breeders screen breeding dogs through the Orthopedic Foundation for Animals using extended-leg radiographs, and that same screening logic is worth extending to pet dogs whose activity plan is being built from scratch — you want to know what you’re working with before you commit to years of hard trail runs.

Degenerative myelopathy is a separate and later-onset concern: a progressive spinal cord degeneration that typically begins between roughly 8 and 14 years of age and for which Australian Shepherds have documented genetic susceptibility, per the OFA: Orthopedic Foundation for Animals. It isn’t preventable through exercise, and I want to be direct about that rather than imply otherwise — but recognizing early signs, a subtle knuckling of a rear paw, scuffed nails on one side, matters because it changes the conversation from “is this just arthritis” to “let’s test for the risk allele and plan accordingly.”

Where breed comparisons help owners decide if this is the right dog

If you’re still deciding whether an Aussie’s exercise and genetic-screening demands fit your life, it’s worth reading the case for a related but meaningfully different breed in Border Collie vs Australian Shepherd: The Real Differences That Matter Long-Term, or, if the daily time commitment above sounds unrealistic for your schedule, our honest breakdown of Best Low-Maintenance Dog Breeds for Busy People. Owners drawn to the Aussie’s coat and drive sometimes also compare working herding lines against protection-and-guard lineages; that tradeoff is covered in German Shepherd vs Belgian Malinois: The Longevity Case for Which Dog Ages Better.

What I’d tell you if you asked me directly

Get the MDR1 test. It costs little, takes a cheek swab, and removes a genuine emergency risk from the table for the dog’s whole life. Ask about hip screening before you commit to a hard-impact exercise regimen, especially in the first two years of growth. Build the daily hour-plus of activity around a real task, not just distance, because this breed was never optimized for aimless output. And when an older Aussie slows down, don’t assume it’s simple arthritis until you’ve ruled out the spinal picture — the two look similar early and are managed very differently. None of this is exotic advice. It’s the order I wish more owners walked in with, before the destructive door frame, not after.