The Border Collie was developed on the border between Scotland and England as a sheepdog, selected purely for working ability rather than appearance. That selection produced what is widely considered the most trainable dog breed there is, and it is the source of both the breed’s appeal and its problems in pet homes.

Appearance

Medium sized, athletic and agile. Coat either rough or smooth, most commonly black and white but occurring in many colours and patterns.

Merle colouring is worth a note: breeding two merle dogs together produces puppies at high risk of deafness and eye defects. Reputable breeders do not do it.

Temperament and needs

Intensely intelligent, energetic, sensitive and focused. They learn quickly, including things you did not intend to teach them.

They were selected to work all day and to solve problems continuously. In a home with nothing to do, that capacity turns inward and produces:

Herding of children, cyclists, cars and other animals, including nipping at heels
Obsessive behaviours: shadow chasing, light chasing, spinning, staring at reflections
Barking, pacing and destructiveness
Anxiety and noise sensitivity

These are not defects of the breed. They are what happens to a working dog with no work.

Exercise is not the answer on its own

The most common mistake is trying to tire a Border Collie physically. It does not work, and it makes the problem worse: a dog conditioned by hours of ball throwing becomes fitter, more aroused and harder to settle.

What these dogs need is mental work:

Scent work and search games, which are the single most useful activity
Training sessions of ten to fifteen minutes, several times a day
Trick training and learning names of objects
Puzzle feeders and foraging instead of a bowl
A dog sport: agility, obedience, herding, canicross
And deliberately taught settling, since many of these dogs cannot switch off on their own

Avoid endless repetitive ball throwing. It builds arousal and, in some dogs, obsession.

Herding behaviour in the home

A Border Collie that nips at heels or circles children is not being aggressive; it is doing what it was bred for at the wrong target. It is redirected rather than punished: teach an alternative behaviour, manage the situations that trigger it, and give the herding drive a legitimate outlet.

Health

Generally a healthy, long lived breed.

Hip dysplasia, so ask about parental hip scores.

Collie eye anomaly and progressive retinal atrophy, both inherited; breeding stock should be eye tested.

MDR1 gene mutation, which is important and often overlooked. Dogs carrying it have a severe, sometimes fatal reaction to certain common medications, including some worming and antiparasitic drugs. A genetic test exists. If your Border Collie has been tested, tell us before any medication is given. If it has not, testing is worth doing.

Epilepsy, occurring in some lines.

Noise phobia, common enough in the breed to be worth planning for around fireworks.

Is it the right dog

Ask honestly: is there time every day, in bad weather and busy weeks, for training and scent work as well as walks? If not, this is a breed that will be unhappy, and an unhappy Border Collie makes the household unhappy too.