Personality
Border Collies are a smart, biddable breed with an instinctive desire to work closely and intensely with a human handler. Although the primary role of the Border Collie is that of the working stock dog, dogs of this breed are becoming increasingly popular as pets. True to their working-dog heritage, Border Collies make very demanding, energetic pets that are better off in households that can provide them with plenty of exercise and a job to do. Among some breeders in the United Kingdom there is a common saying: "no sheep, no collie," referring to the dog's usual unsuitability to people who just want a "smart dog." However, in an appropriate home, with a dedicated, active owner, a Border Collie can be an excellent companion. Participating in dog sports is popular with Border Collie owners.
Activity Requirements
Border Collies are unsuitable pets for people who cannot or will not provide a considerable amount of daily exercise for their dogs, both physical and mental. They are also a poor choice for households that are not prepared for the characteristic behaviors that are part of their working-dog heritage. For example, as with many working breeds, Border Collies can be motion-sensitive and may attempt to control the movements of family members, cats, squirrels, bicycles, cars, or anything else that moves if not given enough mental and physical stimulation. These dogs are also unsuitable for households with small children, because they frequently try to "herd" the children or react rather quickly to unexpected movements. Many Border Collies who end up in shelters or rescue groups are there because owners, who may have been attracted by their appearance and intelligence, were not prepared to meet their dog's needs.