 A wide variety of game is worked below ground with terriers, including red fox, groundhogs (also known as woodchucks), raccoons, opossums, nutria (also known as coypu), European and American badgers.According to a 1994 survey by the British Association for Shooting and Conservation, 9% of foxes killed by UK gamekeepers were killed following the use of terriers.Terrier work is not a very efficient way of hunting vermin, though over 500 members of the Royal College of Veterinary Surgeons argue that it is a humane way to reduce fox numbers, and is quite selective.