The Wire Fox Terrier (also known as Wire Hair Fox Terrier or Wirehaired Terrier) is a breed of dog, one of many terrier breeds. It is a fox terrier, and although it bears a resemblance to the Smooth Fox Terrier, they are believed to have been developed separately. Two of the wire fox terrier's most distinctive traits are its energy and intelligence. It has a low threshold for boredom and requires stimulation, exercise and attention. The wire fox terrier is a companion animal that requires near-constant attention.