Prairie dogs (Cynomys) are burrowing rodents native to the
grasslands of North America. There are five different species
of prairie dogs: black-tailed, white-tailed, Gunnison, Utah,
and Mexican prairie dogs. They are a type of ground squirrel.
Prairie dogs are named for their habitat and warning call,
which sounds similar to a dog's bark. The name was in use
by at least 1774.