Collies are a breed of dogs that originated in Britain as sheep dogs. Known for their intelligence and agility, they are adept at following orders and herding large flocks of sheep. Collies are often so smart that they become distressed if they are not placed in a stimulating environment and kept active. For this reason, they make excellent work dogs and companion animals. Lassie is an example of a famous collie. Color in this border collie and give her a name!