Is a Toy Fox Terrier the same as a Rat Terrier?

No, Toy Fox Terriers and Rat Terriers are not the same breed, although they share some similarities. Toy Fox Terriers are smaller and weigh between four and seven pounds. They were developed for companionship and to hunt small game. Rat Terriers are larger, weighing between 10 and 25 pounds, and were bred for farm work, hunting rats and other small vermin.