Border Collie and Australian Shepherd Mix Puppies for Sale
Your complete guide to the Border Aussie — the brilliant, boundless-energy herding cross that demands as much from your lifestyle as it gives in loyalty and love.
If you are searching for Border Collie and Australian Shepherd mix puppies for sale, you are likely drawn to one of the most intelligent and capable crossbreeds available. Known as the Border Aussie, this mix combines two of the world's most celebrated herding breeds into a single package of intense drive, remarkable trainability, and unwavering loyalty.
But before you fall for those striking merle coats and piercing eyes, understand what you are signing up for. This is not a casual companion breed. The Border Aussie is a working dog through and through, bred to think, move, and problem-solve all day long. This guide walks you through everything you need to know before bringing one home — from temperament and exercise demands to health screening and how to identify a breeder who prioritizes the dogs over the profit.
Breed Overview & Traits
The Border Aussie is a first-generation cross between a Border Collie and an Australian Shepherd. Both parent breeds were developed for herding livestock in demanding environments, which means the mix inherits a powerful combination of athleticism, intelligence, and work ethic[citation:5][citation:16].
Size & Build
Medium to large, athletic frame. Males typically stand 19–23 inches and weigh 35–65 pounds; females are slightly smaller at 18–22 inches and 30–55 pounds. The build leans toward the Border Collie's leaner frame but with the Aussie's substance[citation:9][citation:16].
Mid-range sizeCoat & Colors
Medium-length double coat that sheds year-round with heavier seasonal blowouts in spring and fall. Colors include black and white, red, blue merle, red merle, and tricolor. Eye color can be brown, amber, blue, or heterochromia (two different colors)[citation:2][citation:16].
Moderate groomingEnergy Level
Very high. This is a working cross that needs a minimum of one to two hours of vigorous daily activity. Without adequate physical and mental outlets, they become destructive, anxious, and difficult to manage[citation:5][citation:9].
High-driveTrainability
Exceptional. Both parent breeds are among the most trainable dogs in the world. Border Aussies learn commands quickly and thrive on structured training, dog sports, and tasks that challenge their minds[citation:2][citation:16].
Top-tier trainabilityThe Hybrid Vigor Advantage: Crossbreeds like the Border Aussie often benefit from hybrid vigor — a phenomenon where mixing two distinct gene pools can produce offspring that are healthier and more robust than either purebred parent. This does not guarantee a health issue-free dog, but it does reduce the risk of certain inherited conditions[citation:2][citation:5].
Temperament & Family Fit
A Border Aussie's personality is defined by its genetics: these are dogs bred to work alongside humans, make decisions, and manage livestock. That translates into a companion who is deeply bonded to their family, alert to everything happening around them, and always ready for the next task.
Are They Good With Children?
Yes, with important caveats. Properly socialized Border Aussies can be wonderful with children, especially kids old enough to understand how to interact respectfully with dogs[citation:2][citation:9]. However, their herding instinct is strong. They may attempt to "herd" running children by circling, staring, or nipping at heels. This is not aggression — it is instinct — but it requires management through training and supervision. Families with very young children or toddlers should be prepared for active monitoring and consistent boundary-setting.
Other Pets
Border Aussies generally do well with other dogs, especially when raised alongside them. Cats and small pets are more complicated because the prey drive inherited from both parent breeds can trigger chasing behavior[citation:2]. Early introduction and training can mitigate this, but a Border Aussie should never be left unsupervised with small animals like hamsters, rabbits, or birds.
Stranger Danger & Alertness
Both Border Collies and Australian Shepherds are naturally reserved with strangers. Your Border Aussie will likely alert you to visitors and may take time to warm up to new people. This makes them excellent watchdogs but means socialization from a young age is critical to prevent excessive suspicion or fear-based reactivity[citation:5][citation:16].
Who This Breed Is For
- Active individuals or families who enjoy running, hiking, or dog sports
- Owners with previous experience handling high-drive working breeds
- Homes with securely fenced yards (not apartments or condos)
- People who want a deeply bonded, interactive companion
- Those committed to lifelong training and mental enrichment
Who Should Look Elsewhere
- First-time dog owners seeking a low-maintenance companion
- People who work long hours away from home
- Apartment dwellers without access to open space
- Families with very young children who cannot participate in training
- Anyone looking for a dog content to lounge all day
Exercise & Mental Stimulation
This is the section to read twice before committing. The Border Aussie is not a dog that will be satisfied with a quick walk around the block. Both parent breeds were developed to work all day, and the mix inherits that same engine[citation:5][citation:16].
Plan on one to two hours of vigorous daily activity as a baseline. This is not optional — it is a fundamental requirement for the dog's physical and mental health. Without it, you will see destructive chewing, excessive barking, herding of family members, and anxiety-related behaviors.
Physical Exercise That Works
- Running or hiking: The Border Aussie's natural gait and stamina make them excellent trail partners. Start with shorter distances for puppies and build gradually as their growth plates close.
- Fetch and frisbee: High-intensity, short-duration activities that satisfy the chase instinct and burn energy efficiently.
- Agility training: This is arguably the ideal outlet for a Border Aussie. It combines physical exertion with mental problem-solving and gives the dog a "job" to perform[citation:9].
- Herding activities: If you have access to livestock or a herding facility, this taps directly into the dog's core instincts. Even a herding ball in the backyard can provide a partial outlet[citation:13].
- Swimming: Low-impact exercise that is excellent for joint health and cooling off in summer.
Mental Exercise Is Equally Important
A Border Aussie's brain needs a workout as much as its body does. Fifteen minutes of focused mental work can be as tiring as thirty minutes of physical exercise. Incorporate puzzle toys, scent games, training sessions, and problem-solving challenges into your daily routine[citation:16].
Signs Your Border Aussie Is Under-Exercised: Destructive chewing, digging, excessive barking, pacing, nipping at heels, inability to settle, and attention-seeking behaviors like jumping or mouthing. If you see these, the solution is more exercise and mental stimulation — not more punishment.
Training & Socialization
Training a Border Aussie is a pleasure for anyone who enjoys working with a dog that learns fast and wants to please. Both parent breeds are famously biddable and responsive, and the mix inherits that eagerness to learn[citation:2][citation:5].
Start Early and Be Consistent
Begin training the day your puppy comes home. Border Aussies are capable of learning basic commands and house rules remarkably quickly, but they also test boundaries if they sense inconsistency. Every family member must use the same commands, the same rules, and the same rewards. Confusion creates anxiety and behavior problems in intelligent dogs.
Positive Reinforcement Only
These dogs are sensitive to harsh corrections and can become defensive or shut down if treated roughly. Modern behavioral science overwhelmingly supports reward-based training for all dogs, but it is especially important for intelligent herding breeds who need to trust their handler to function confidently[citation:5].
- Sit and stay: Foundation commands for impulse control. Essential for vet visits, grooming, and managing excitement around visitors.
- Recall (come): The most important safety command for a dog with a strong chase drive. Practice in a securely fenced area with increasing distractions. Never punish a dog for coming to you, even if they took their time.
- Leave it: Critical for preventing your dog from chasing wildlife, eating dangerous items, or herding inappropriate targets like bicycles or cars.
- Loose-leash walking: A Border Aussie who pulls on leash is exhausting to walk. Teach this early and reinforce it consistently.
Socialization Window
The critical socialization period for puppies is between 3 and 16 weeks of age. During this window, expose your Border Aussie puppy to as many positive experiences as possible: different people, friendly vaccinated dogs, varied environments, sounds, surfaces, and handling. This does not mean taking them to high-traffic dog parks before vaccinations are complete — it means controlled, safe exposure[citation:5].
Lifelong Training Is Non-Negotiable: A Border Aussie who is trained only as a puppy and then left to coast will find his own entertainment. This breed needs ongoing mental challenges throughout life. Consider dog sports like agility, flyball, treibball, or competitive obedience to keep their mind engaged and their body exercised.
Grooming & Coat Care
The Border Aussie has a medium-length double coat that is weather-resistant and designed to protect the dog from the elements. It is not a high-maintenance coat in terms of professional grooming, but it does shed — a lot[citation:2][citation:16].
- Brushing: Two to three times per week with a slicker brush and undercoat rake. During seasonal shedding periods (spring and fall), daily brushing may be necessary to manage the volume of loose fur.
- Bathing: Every 6–8 weeks, or when the dog gets genuinely dirty. Over-bathing strips natural oils and can cause skin irritation.
- Nail trimming: Every 3–4 weeks. Long nails affect gait and can cause joint strain over time.
- Ear cleaning: Weekly check and clean, especially if your dog has floppier ears inherited from the Aussie side.
- Dental care: Brush teeth several times per week to prevent the dental disease that affects most dogs by age three.
Do Not Shave Your Border Aussie: The double coat regulates body temperature in both heat and cold. Shaving it damages the coat's structure and can impair the dog's ability to cool down properly. Regular brushing and shade/water access are the correct approach to summer heat management.
Health & Lifespan
Border Aussies are generally healthy dogs with a lifespan of 12 to 15 years[citation:5][citation:16]. The hybrid cross may benefit from hybrid vigor, but responsible breeding still matters enormously. Both parent breeds carry genetic conditions that can be passed to offspring.
| Condition | What to Know | Prevention |
|---|---|---|
| Hip & Elbow Dysplasia | Joint malformations that can lead to arthritis. More common in Australian Shepherds but present in both lines. | Parents should have OFA or PennHIP clearances. Avoid over-exercising puppies during growth. |
| Collie Eye Anomaly (CEA) | Congenital eye condition affecting the retina and choroid. Can cause vision impairment. | Both parent breeds can carry the gene. Breeders should DNA test breeding dogs. |
| Progressive Retinal Atrophy (PRA) | Degenerative eye disease that leads to blindness over time. DNA test available. | Only breed dogs cleared of the PRA gene. |
| Epilepsy | Seizure disorder that can appear in young adulthood. Manageable with medication but not curable. | Ask about seizure history in the puppy's lineage. |
| Multi-Drug Sensitivity (MDR1) | Genetic mutation that makes certain common medications (including some dewormers) dangerous. Common in herding breeds. | DNA test the puppy or parents. Inform your vet of the result. |
When evaluating a breeder, ask specifically about health testing for the parent dogs. A responsible breeder will have documentation for hip clearances, eye exams, and genetic tests appropriate to both Border Collies and Australian Shepherds. If a breeder cannot or will not provide this information, that is a serious red flag.
Finding a Responsible Breeder
The popularity of designer crosses and "rare" colors has created a market for unscrupulous breeders who prioritize profit over the health and temperament of their dogs. Finding a Border Collie Australian Shepherd mix puppy from a responsible source requires effort — but it is the single most important decision you will make.
Green Flags
- They welcome visits: A responsible breeder invites you to see the puppies, meet the parents (at least the mother), and inspect where the dogs are raised. They do not conduct "parking lot transactions"[citation:10].
- They ask you questions: Good breeders care where their puppies go. They will ask about your home, lifestyle, experience with dogs, and exercise routine. They may refuse to sell to you if the fit is wrong.
- They provide health records: Vaccination history, deworming records, and documentation of health testing for the parent dogs should be readily available.
- They specialize: Most ethical breeders focus on one or two breeds. A breeder producing dozens of different crossbreeds is almost certainly a commercial operation.
- They offer a health guarantee and contract: A written contract should outline health guarantees, return policies, and spay/neuter requirements[citation:10].
Red Flags
- Refusal to let you visit the breeding facility or meet the mother dog
- Multiple litters available year-round, or many different breeds for sale
- No health testing documentation for the parent dogs
- Pressure to buy immediately or pay a deposit before meeting the puppy
- Selling through pet stores, parking lots, or exclusively online with no home visit
- Puppies that appear fearful, lethargic, or physically unwell
- No contract, no health guarantee, and no questions about your suitability
Consider Rescue First: Border Aussie mixes and other herding crossbreeds appear in shelters and breed-specific rescues regularly. Many are surrendered because their previous owners underestimated the breed's exercise and training needs. If you are open to adoption, check breed rescues and shelters before pursuing a breeder. If you do buy from a breeder, use the questions to ask a dog breeder guide to vet your choice thoroughly.
Frequently Asked Questions
The Bottom Line: A Border Collie Australian Shepherd mix is a spectacular dog for the right owner — and a frustrating one for the wrong owner. If you are active, committed to training, and looking for a canine partner who will challenge and reward you in equal measure, this cross can be extraordinary. If you want a low-maintenance companion, look elsewhere. The puppy you choose today will be part of your family for twelve to fifteen years. Choose with your head as much as your heart.