There are two types of collies, rough-coated or smooth-coated.  Rough-coated collies have long, thick fur while smooth-coated collies have short fur.  Lassie, a TV and movie star is a rough-coated Collie.  All Collies have light brown, white and sometimes dark brown fur.
   Collies are known for their affection for children.

Border Collies:
   Border collies have black and white coats.  They're used for herding sheep.  A shepherd is able to manage a large group of sheep or cattle with just one border collie.  Pretty smart dog if you ask me!