prairie dog definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a genus (Cynomys, family Sciuridae) of small, burrowing rodents of North America, having a barking cry and living in colonies
prairie dog definition by American Heritage Dictionary
Any of several burrowing rodents of the genus Cynomys in the squirrel family, having light brown fur and a warning call that sounds similar to a dog's bark. The prairie dog lives in large colonies, chiefly in the Great Plains of North America.