Black-tailed prairie dog Black-tailed prairie dog The black-tailed prairie dog ("Cynomys ludovicianus") is a rodent of the family Sciuridae found in the Great Plains of North America from about the United States-Canada border to the United States-Mexico border. Unlike some other prairie dogs, these animals do not truly hibernate. The black-tailed prairie dog can be seen above ground in midwinter. A black-tailed prairie dog town in Texas was reported to cover and included 400,000,000 individuals. Prior to habitat destruction, this species may have been the most abundant prairie dog in central North America. This species was one of two described by the Lewis
Breed type (dog) English Mastiff standard cautions, "Judges should also beware of putting a premium on showiness." "Breed type" usually takes into account the work the original dog type from which the breed was developed was bred to do. In order to counterbalance the overuse of appearance in awarding championships, some major registries and breed clubs have instituted performance events as part of the awards at conformation shows. Dog type, "breed type", dog breed, and purebred dog breed are at times all used interchangeably, but they all have distinct meanings. "Types of dogs" are varieties developed for a specific work; they may be