“The craft of tending flocks of sheep was introduced to the British by the Romans and it wasn’t long before Celtic clans developed their own types of sheepdogs to tend to these tasks. One of these, the Border Collie, is recognized as the finest sheep-herding dog in the world. While appearance has been a major concern in many breeds, the working ability has always been the prime criterion in this breed.
Intelligence and trainability are a hallmark of the Border Collie. Alert and eager, the breed can display a single-mindedness for the task at hand. Affectionate with friends, the Border Collie may be reserved toward strangers. Instances of extreme shyness or aggressiveness are virtually unknown.
‘Highly active’ only begins to describe the Border Collie. Swift, agile, tireless and with an incredible desire to work, the Border Collie is not for the couch-potato owner. This high-energy dog needs to work and if there are no sheep handy, it will thrive on such activities as flyball, agility, Frisbee-catching and advanced obedience.
A medium-sized dog, the height at the withers varies from 18-22 in (46-56 cm). The breed has strong but not excessive bone and should always have muscle and substance without appearing heavy.
There are two varieties of coat . The smooth coat is short over the entire body with some feathering on the forelegs and chest. The rough coat is medium to long and may be flat or slightly wavy. Both varieties carry a soft undercoat beneath the weather-resistant outer coat
The Border Collie comes in many colours and colour combinations. The most common is black with white markings on the collar, blaze, stockings and tail tip. However, dogs may be a solid colour (with the exception of all white), bi-colour, tri-colour, merle or sable.”
(Source-Canadian Kennel Club)