Brindle is a breed standard color for border collies that is typically a brown or tan base with streaks of other colors running through it. The streaks are often a darker color than the base. Brindle border collies generally retain the familiar white markings that are common in the breed.
Border collies had their start in the 1800s in Great Britain as sheep herding dogs. In modern times, this breed uses its historical talents to work as sheep herders and to compete in obedience and herding trial competitions. Their history has left them moderately protective and full of energy, so they need regular exercise to work off the excess energy. Both physical and mental workouts are essential for this intelligent breed.
Although these dogs do have some health concerns, such as deafness and hip and eye problems, they have an average lifespan of 10 to 14 years. As adults they can reach up to 23 inches tall and weigh up to 45 pounds, though females tend to be slightly shorter than males. Border Collies are shy around other animals and strangers, but they are friendly toward other dogs and affectionate with their owners. Their medium-length coat requires brushing at least twice a week to remove loose hair and reduce matting.