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
Dog type Dog type Dog types are broad categories of dogs based on form, function or style of work, lineage, or appearance. In contrast, modern "dog breeds" are particular breed standards, sharing a common set of heritable characteristics, determined by the kennel club that recognizes the breed. Dog types include locally-adapted forms (or "landraces") that arose undocumented over a long time. A "dog type" can be referred to broadly, as in gun dog, or more specifically, as in spaniel. Dogs raised and trained for a specific working ability rather than appearance may not closely resemble other dogs doing the same work, or