Border Collies are frighteningly smart,active workaholics who must have a job that can be as simple as chasing a tennis ball or as demanding as training for something like herding or agility. What the job is doesn't matter so much as that the Border has a job. Excellent watchdog &will alert you to the arrival of a burglar or.. a squirrel. Mine goes nuts over squirrels! They take a bit more from you than other breeds, but no breed gives more.