Billy locked eyes with us ten seconds after we walked in, and then he did not stop. That flat, patient stare is the first thing people notice about a border collie dog, and it explains almost everything else.
We housesat him for five weeks in June 2025, on the Gold Coast in Australia. He also had short hair, which is not what the postcards show. Our first surprise arrived before we put the bags down.
Here is the short version. Border collies need two hours of exercise every day, brushing two or three times a week, and something to think about. Most live 12 to 15 years. They are magnificent animals, and they make a poor first dog.
1. The Stare Is a Hunting Behaviour, Not Affection
That famous border collie eye is a modified predatory motor pattern rather than affection. Billy held our gaze and adjusted it as we moved, which felt uncannily human. Shepherds in the Border country between Scotland and England bred dogs that moved livestock by staring and crouching, never by biting.
The domestic dog (Canis lupus familiaris) inherited a hunting sequence from the wolf (Canis lupus): orient, eye, stalk, chase, grab-bite, kill-bite. Herding breeds are wolves with the last steps bred out and the middle ones turned up loud. In short, the herding instinct is the front half of a hunt, pointed at sheep instead of dinner.
A 2025 study of 12 herding breeds found strong selection on EPHB1. That gene is linked to activity levels and spatial memory. Dogs carrying the working-line version chased and grabbed at toys far more.
2. The Smartest-Dog Label Is Real, but It Measures One Narrow Thing
Border collies top every list of intelligent dogs because those lists measure obedience, not general cleverness. Stanley Coren built the famous ranking from obedience judges. They scored how fast different breeds learn a new command and how reliably they comply.
The star exhibit is Chaser, who learned 1,022 object names and combined them with separate verbs. Read the method, though: that took three years of four to five hours of training daily.
Meanwhile, a study of 68 farm border collies in Wales did find a general intelligence factor. The authors flagged their small sample honestly. A 2018 review went further, concluding that dog cognition is not exceptional next to wolves and other domesticated animals. We unpacked the whole ranking argument in our piece on the smartest dog breeds.
3. He Ignored Recall When It Did Not Suit Him
Billy came when called only if it suited him, and Jackie clocked the pattern before I did. He was not confused or badly trained. He had worked out that two strangers held no authority in his house, and he acted on that for a fortnight.
Working dogs of this type operate hundreds of metres from the handler, out of earshot, judging a moving flock in real time. Because farmers selected for initiative rather than blind compliance, you get a dog that treats recall as information.
The fix is not force. Collies are unusually sensitive to human mood, so harsh corrections produce a shut-down dog rather than a responsive one. Food rewards, praise and early consistency are what breed clubs and behaviour researchers both recommend.
4. Two Hours of Exercise a Day Is the Floor, Not the Target
The Royal Kennel Club puts this breed in its highest exercise bracket: more than two hours every day. We gave Billy one or two walks daily, and besides that he patrolled and sprinted around a very large yard for hours. Honestly, we had the easy version.
A yard is not exercise on its own, though. Plenty of collies lie down in a big garden and wait for a human to start something. Billy self-started, and he loved a chase, running at me across the grass and wheeling around for another lap. The greyhound we sat, by contrast, needed forty minutes and slept for sixteen hours.
How much exercise does a border collie puppy need?
Far less than an adult. The common veterinary rule of thumb is five minutes of structured walking per month of age, twice daily. Over-exercising growing pups risks their joints.
5. Mental Work Tires Them Faster Than Kilometres Do
A tired border collie is usually a mentally tired one. Billy tracked a thrown toy with total concentration for minutes at a time, reading small movements of the hand before the throw. Very few dogs sustain that focus, and it is the machinery that reads a flock.
Point it at nothing and it picks its own targets. Under-stimulated collies chase shadows, spin, herd bicycles and dismantle furniture. Mental stimulation from puzzle toys, scent games and short training bursts therefore does more for an evening than an extra kilometre. Agility, flyball and herding events exist because these high drive dogs needed somewhere to put the energy.
6. He Spent Hours Alone in the Backyard, Which We Did Not Expect
Most breed pages warn against leaving a collie alone for long, and Billy quietly ignored that advice every day. He took himself outside and stayed for hours, apparently content. Then he came back in on his own schedule and put himself to bed.
Be careful what that proves, though. Solitude by choice is not the same as coping with an empty house for eight hours. Still, the velcro-dog stereotype is not universal. Billy was independent in a way our little dachshund housesit never was. That one slept under the covers and objected to closed doors.
7. The Shoes He Hid Were Probably Not Revenge
Billy collected his owners’ shoes after they left and stashed them around the house. It looked exactly like a grudge. The tidier explanation is less satisfying and much better supported.
Shoes are the most scent-loaded objects a departing owner leaves behind, so gathering them fits ordinary separation-related behaviour. Chewing also releases tension, and the habit worked, because somebody always reacted.
Dogs do not appear to hold grudges in the human sense, and reading spite into it pushes owners toward punishment that deepens anxiety. Manage it instead: put the shoes away, leave something legal to chew, and build up alone-time gradually.
8. He Barked at Every Stranger Once, Then Filed Them as Safe
Border collies tend to be reserved with strangers rather than aggressive, and Billy ran that script exactly. He barked hard when we arrived, watched his owners stay relaxed, and decided within minutes that we were fine. He repeated it with Jackie’s mum, with unfamiliar cars, and with the contractor who came to check the fence.
That is social referencing: checking a trusted human before committing to his own verdict. The result is an excellent alert dog and a mediocre guard dog, which suits most families anyway.
We never saw Billy around young children, so we will not pretend to know. A collie may try to herd children, other dogs and other pets by circling, staring and nipping at heels. That is herding instinct, not aggression, and early socialisation does most of the work. Most border collies live happily with cats and other dogs when raised alongside them.
9. Not Every Border Collie Dog Looks Like the Postcard
Billy was a smooth-coated boy who looked more like a farm mongrel than a show dog. We spent the first week assuming he was a mix, and he may well be. Yet the breed has two types of coat, rough and smooth. Both are double coats, so short hair is entirely normal.
Size, colour and the split registries
The American Kennel Club standard puts a male at 19 to 22 inches and 30 to 55 pounds. A female runs slightly smaller. Black and white dominates, but red and white, tricolour, sable and blue merle all appear in purebred dogs. Breeding merle to merle raises the risk of deafness and eye defects, so responsible breeders avoid that pairing.
Working registries such as the International Sheep Dog Society registered dogs on proven ability, not looks, while the AKC came much later. That split is why they stay more variable than most popular breeds.
10. They Shed All Year, and Twice as Hard in Spring and Autumn
Border collies shed all year, with heavy seasonal moults in spring and autumn. Grooming is simple rather than light. The medium length double coat needs brushing two or three times a week, daily during a moult. Baths can stay occasional, roughly monthly, since over-washing strips the coat’s oils.
Billy’s smooth coat was the low-maintenance version, and we barely brushed him in five weeks. Rough-coated dogs carry far more fur and feathering on the legs and tail.
One claim deserves flagging. Everyone recommends oatmeal shampoo for collie skin, yet the evidence is thin, and a genuinely itchy dog is a vet conversation.
11. The Health Conditions Worth Testing For Before You Buy
Two large UK studies bracket the lifespan question. A 2022 analysis of veterinary records put border collie life expectancy at 12.1 years, while a 2024 study of 584,734 dogs reported 13.1. Treat 12 to 15 years as the realistic range.
The breed is prone to a short list of inherited problems, most of which now have DNA tests. Hip dysplasia, where the hip joint develops with a poor fit and eventually arthritis, is the common orthopaedic one. Roughly 10.8% of border collies screened by the Orthopedic Foundation for Animals were dysplastic between 1974 and 2015. That fell to 8.4% for dogs born after 2011. Screening is voluntary, so those figures probably run low.
Collie eye anomaly affects under 2.5% of the breed, ranging from a mild vessel abnormality to blindness. Mild cases can appear to normalise, so pups need examining before nine weeks.
The DNA tests to ask a breeder about
Trapped neutrophil syndrome, neuronal ceroid lipofuscinosis and Imerslund-Gräsbeck syndrome are all rare and all serious. Trapped neutrophil syndrome strands immune cells in the bone marrow, and affected dogs suffer chronic infection from their first months. Neuronal ceroid lipofuscinosis is a fatal brain disease that usually kills by around two years. Carrier rates run far higher than affected rates, so test the parents. Ask to meet the mother, and the brother or sister of your pup.
Epilepsy is the other condition owners meet. Among 116 affected border collies studied in 2022, the median age at first seizure was 33.5 months. MDR1 drug sensitivity appears on panels too, but unlike some other breeds it stays rare here, at roughly 1%. One widely repeated statistic claims the breed is 2.67 times more likely to develop liver tumours. We could not trace that to a peer-reviewed source, so treat it cautiously.
This reflects published research and our experience as sitters, not veterinary advice. Take specific concerns, including diet, to your vet.
12. A Border Collie Dog Is a Poor First Dog and a Poor Apartment Dog
Here is the straight answer: for most first-time owners, no. A collie finds every gap in your training, your routine and your fencing, and does so cheerfully. Experienced, active households get an extraordinary dog. Beginners get a bored, reactive one and blame themselves.
Apartments are the same problem in miniature. Hours matter far more than square metres, so a flat-dwelling runner beats a suburban owner with a lawn and no time. Even so, Billy had a large yard, self-exercised for hours, and still needed his walks every day.
Is a Border Collie the Ideal Dog for You?
You will thrive with this breed if your life already contains movement and structure. Runners, hikers, farmers and dog-sport people find the collie the ideal dog and, in most cases, a genuine best friend. So do families with older children who can learn not to sprint past a herding dog. What a collie needs to stay happy is a job, not a cushion.
Walk away if you work long days out of the house, travel often, or want a dog that switches off by default. Walk away too if this is your first dog and nobody experienced is helping you. Collies are not difficult animals. They are simply very good at something, and a working dog will invent work if you supply none. Choosing a calmer breed is no failure. Getting a collie you cannot exercise is.
Is a Border Collie Right for You? 🐕
Eight honest questions, based on our five weeks living with Billy on the Gold Coast and the research. No fluff — you’ll get a real verdict, plus the specific things to watch.
Frequently Asked Questions About Border Collies
Cancer is the leading cause of death in border collies. A UK Kennel Club health survey recorded cancer in 23.6% of deaths. Old age followed at 17.9%, and cerebral vascular problems at 9.4%. Because collies avoid the extreme body shapes that shorten other popular breeds, most reach real old age.
Most vets treat border collies as senior from about eight to ten years of age. Against a life expectancy of 12 to 13 years, that covers the last third of life. Owners notice slower recovery after exercise, stiffness on cold mornings, and less appetite for long sessions.
No independently verified longevity record exists for the breed. The story you find everywhere is Bramble, said to have reached 25, though once held by Guinness as the oldest living dog, Bluey remains the overall record holder. Guinness World Records instead recognises Bluey, an Australian cattle dog who reached 29. Collies passing 15 years are uncommon but real.
What Five Weeks With Billy Actually Taught Us
Billy made sense the moment we stopped reading him as a pet and started reading him as an employee between shifts. The stare, the independence, the refusal to come, the hoarded shoes — all of it traces back to a dog engineered to make decisions far from its human. Give that dog a job and it becomes the best friend in the house. Give it a couch and it will invent one you did not authorise.
So stand at a sheepdog trial before you buy a puppy. It is also worth comparing notes with our guides to herding and sheepdog breeds and the smartest dog breeds.
Have you lived with a collie who broke one of these rules? Tell us in the comments, because the exceptions are usually the interesting part.
References:
Arden, R., & Adams, M. J. (2016). A general intelligence factor in dogs. Intelligence, 55, 79–85. https://doi.org/10.1016/j.intell.2016.01.008
Border Collie Health & Education Foundation. (n.d.). Genetic diseases. https://bordercolliefoundation.org/health-and-education/genetic-diseases/
Jeong, H., Ostrander, E. A., & Kim, J. (2025). Genomic evidence for behavioral adaptation of herding dogs. Science Advances, 11(18), eadp4591. https://doi.org/10.1126/sciadv.adp4591
Lea, S. E. G., & Osthaus, B. (2018). In what sense are dogs special? Canine cognition in comparative context. Learning & Behavior, 46(4), 335–363. https://doi.org/10.3758/s13420-018-0349-7
McMillan, K. M., Bielby, J., Williams, C. L., Upjohn, M. M., Casey, R. A., & Christley, R. M. (2024). Longevity of companion dog breeds: Those at risk from early death. Scientific Reports, 14, 531. https://doi.org/10.1038/s41598-023-50458-w
Santifort, K. M., Bertijn, E., Bhatti, S. F. M., Leegwater, P., Fischer, A., & Mandigers, P. J. J. (2022). Phenotypic characterization of idiopathic epilepsy in border collies. Frontiers in Veterinary Science, 9, 880318. https://doi.org/10.3389/fvets.2022.880318
Teng, K. T., Brodbelt, D. C., Pegram, C., Church, D. B., & O’Neill, D. G. (2022). Life tables of annual life expectancy and mortality for companion dogs in the United Kingdom. Scientific Reports, 12, 6415. https://doi.org/10.1038/s41598-022-10341-6
