Border Collies came from shepherds along the Anglo-Scottish border, who valued a dog that could gather sheep with speed, focus and very little instruction. Old Hemp, born in Northumberland in 1893, set the quiet, intense working style the breed is known for. Border Collies are medium-sized, usually 30 to 55 pounds, with rough or smooth double coats in black and white and many other colors.
Many are brilliant, eager learners that bond closely with their people, and that same intelligence needs an outlet. A bored Border Collie may herd children, stare down passing scooters or invent destructive games. In San Juan, where the warm climate shapes when a dog can run, adopters do best planning for early outings, indoor training and puzzle games. Dogs vary, so a Border Collie mix may be calmer or just as driven.