A collie is a distinctive type of herding dog, ultimately originating in Britain, especially in the upland areas of the north and west. It is a medium-sized, fairly lightly-built dog with a pointed snout, and many types have a distinctive white pattern over the shoulders. Collies are very active and agile, and most types have a very strong herding instinct.

Collies are always alert and are active and agile. The fur may be short, flat, or long, and the tail may be smooth, feathered, or bushy.Working collies are extremely energetic and agile dogs with great stamina, well able to run all day without tiring, even over very rough or steep ground.