The Kerry Blue Terrier is a breed of dog mistakenly thought to be of County Kerry in South West Ireland; it is actually from Tipperary. In its motherland it is often called the Irish Blue Terrier. Over time the Kerry became a general working dog used for a variety of jobs including herding cattle and sheep and as a guard dog. It was however primarily developed for controlling vermin including rats rabbits badgers foxes otters and hares.