The Fox Terrier's function is that of a dog that will run with the hounds to worry and hold the fox at bay, or hunt by himself for foxes and other vermin. He is traditionally more white than any other color since, as a dog that ran with hounds, it was important that he be distinguishable from the fox. For centuries this dog has been bred "true" (with little variation in appearance or general structure). Long before he was ever in a show ring, this dog was a part of the hunting scene in Great Britain. He is one of the terriers that was bred to "go to ground" when giving chase to the fox.