Border Collie vs Australian Shepherd Compared

How are a Border Collie and an Aussie different?

They share a group and a job title, but their standards describe different dogs. The Dogs Australia Border Collie standard says the breed is “highly intelligent, with an instinctive tendency to work and is readily responsive to training,” with a nature “at all times kindly disposed towards stock.” The Border Collie Club of NSW text on the Dogs Australia breed page describes the famous Border Collie “creep” and the motionless stance of a dog giving stock the “eye”.

The Australian Shepherd standard calls the Aussie “an intelligent working dog of strong herding and guarding instincts” with “the stamina to work all day.” It describes an even disposition, “good natured, seldom quarrelsome,” and adds that Aussies “may be somewhat reserved in initial meetings.” That guarding streak, and the reserve with strangers, is the biggest temperament difference between the two.

Neither breed is Australian. The Border Collie breed page traces the breed to the border of Scotland and England, first imported to Australia in 1901. The Aussie breed page says the Australian Shepherd was developed in America, was reintroduced to Australia in 1990 and was recognised here on 1 January 1994.

Border Collie vs Australian Shepherd side by side

Every entry below is from the two Dogs Australia breed standards unless it names a breed page, all read on 10 November 2026.

Sources: Dogs Australia Border Collie and Australian Shepherd standards; the Border Collie and Australian Shepherd breed pages; Washington State University. Standards describe the ideal show dog; working-line dogs, rescue dogs and crosses vary a lot.

Which has more work drive?

Both have plenty; it shows differently. A Border Collie's drive is intense and focused: the stare, the crouch and the sudden turn of speed described on its breed page. The club says “most of today's Borders don't work,” so their energy and intelligence go into obedience, agility, tracking and showing, and that the breed “needs a structured and disciplined environment” with mental exercise “just as important as physical exercise.”

The Aussie's breed page says Aussies settle into suburban life when their physical and mental needs are met, can be destructive like any breed when they are not, and that drive levels vary within a litter, with “the odd couch potato” for a more laid-back family. The guarding instinct in its standard means early, steady socialisation with visitors matters more than with a Border Collie.

• Herding at home: both breeds may chase and nip at running children, bikes or other pets. It needs redirecting into a game or a job, not punishing.
• Daily needs: real exercise every day plus training, puzzle games or a dog sport. Our Border Collie adolescence and training guide covers the adolescent stage, when many young herding dogs are surrendered.
• Apartments: rarely a good match for either. A calm older rescue dog with a committed owner can manage; a young working-line dog usually cannot.

What about merle, and is it a health risk?

Merle is a marbled coat pattern that both breeds can carry. It is an accepted colour in the Aussie standard (blue merle and red merle) and on the Border Collie breed page (blue merle). One copy of the merle gene is a normal colour. The risk comes from breeding two merles together: a puppy that inherits merle from both parents, a double merle, has a higher risk of hearing and sight problems.

That is why Dogs Australia has banned merle to merle matings in all breeds since 1 January 2015, and puppies from such a mating can only go on the Limited Register. Ask any breeder the colour of both parents. If both are merle, walk away. Be wary too of ads that sell a puppy on a rare colour or blue eyes rather than on health results.

Our merle and brindle dogs guide explains the genetics, cryptic merle, and the research on double merle deafness and eye defects.

Which health tests should each breeder show you?

The lists overlap but are not the same. The table sets out what each breed's Australian clubs say.

From the National Border Collie Council and the Border Collie Club of NSW (Dogs Australia breed page); the Australian Shepherd Association NSW (Dogs Australia breed page), the Australian Shepherd Club of Victoria and Dogs Australia Regulation Part 6. A buying checklist, not veterinary advice.

MDR1 deserves a word on its own. Washington State University's veterinary laboratory says dogs carrying it can become very ill or die if given certain common medicines, and puts the approximate frequency at about 50% in Australian Shepherds, under 5% in Border Collies and about 10% in herding breed crosses. The only way to know is a DNA test. If you adopt a herding cross, it is worth asking your vet about testing, and either way tell your vet the breed.

For what these conditions mean day to day, read our Border Collie health guide and the Sydney Australian Shepherd health guide.

How do their coats cope with Australian heat?

Both are double-coated dogs bred for outdoor work, and both can cope with Australian conditions if you plan for the hot months. The Aussie standard notes that the undercoat varies with climate, and the Border Collie club says the coat can mat during a coat drop if dead hair is not brushed out. Brush regularly, and more during seasonal shedding, rather than shaving the coat.

The RSPCA Knowledgebase on heatstroke lists exercise and hot, humid conditions without enough shade and water among the risk factors, and advises exercising dogs at the coolest times of day. A herding dog will keep working long after it should stop, so on hot days you have to call the end of the game. Walk early or late, carry water, and give a cool, shaded rest area.

Who suits each breed?

There is no winner here, only a better fit.

• A Border Collie suits someone who enjoys training most days, wants a dog for agility, obedience, herding or another sport, and likes a dog that watches every move. The breed club says Borders need an active owner who involves the dog in family life.
• An Australian Shepherd suits an active owner who wants a slightly bigger, sturdier herding dog, will socialise it with visitors from day one, and is comfortable with a dog that may be reserved with strangers.
• Neither suits a home where the dog would be alone in a yard all day, or someone wanting a calm, low-shedding dog. Our calm dog breeds guide and the what dog breed am I quiz are better starting points.

Weighing up other working breeds too? A Kelpie or Australian Cattle Dog asks for a similar commitment, and both appear in Australian rescue far more often than purebred Aussies. Our smartest dog breeds guide explains what the intelligence rankings actually measured.

Adopt or buy a Border Collie or Aussie?

For most people, start with rescue. Border Collies and collie crosses are listed regularly by the rescues and pounds we aggregate, usually as young adults whose energy outgrew their first home. Two rescues specialise in the herding breeds: Border Collie Rescue Australia and Australian Working Dog Rescue International. Purebred Australian Shepherds are less common in rescue, though crosses appear, and the Australian Shepherd Club of Victoria runs a rescue service. An adult in foster care comes with notes on energy, children, cats and strangers, which is exactly what you need to know with these breeds.

A Dogs Australia registered breeder is a reasonable choice if you need a puppy for stock work or a dog sport, or want known parents and health results. Our Border Collie and Australian Shepherd adopt-or-buy guides cover pricing, breeder checks and scam red flags, and the puppies for sale guide has each state's breeder number rules. On “mini Aussies”: the Dogs Australia breed listing has the Miniature American Shepherd as a separate breed, so ask any breeder which breed and register a puppy will be on.

Find a Border Collie or Aussie near you

• Sydney: Border Collies and Australian Shepherds for adoption, plus our Sydney Border Collie and Australian Shepherd adoption guides
• Melbourne: Border Collies and Australian Shepherds for adoption, plus our Melbourne Border Collie and Australian Shepherd adoption guides
• Brisbane: Border Collies and Australian Shepherds for adoption, plus our Brisbane Border Collie and Australian Shepherd adoption guides
• Perth: Border Collies and Australian Shepherds for adoption, plus our Perth Border Collie and Australian Shepherd adoption guides
• Adelaide: Border Collies and Australian Shepherds for adoption, plus our Adelaide Border Collie and Australian Shepherd adoption guides

Before you apply, take the adoption readiness check and run a working dog's first year through the dog cost calculator.