The Sheltie is a long-haired variety of guinea pig, but their coat is not as dense as a Peruvians and their face is not covered with a fringe. If a Sheltie is kept as a pet it is best to trim the long hair around the rear end, to prevent soiling and matting. If the Sheltie is kept for showing, then its hair can be kept clean and tidy in wrappers. If Shelties are kept as a group they must be given plenty of hay to eat, as boredom may lead to barbering, a condition where they bite and chew each others coats.