White-Tailed Deer (Odocoileus virginianus), also known as Virginia deer, is a common American deer species that ranges from the Arctic Circle in western Canada to Ecuador, Peru, and Bolivia. The White-Tailed Deer is named for the thick white fur on the underside of the neck and the rear while the rest of their coat is reddish in the summer and a dull gray in the winter.

The hair of the White-Tailed Deer is flared during flight, and their tail resembles a signaling flag. While White-Tailed Deer from North and South America are generally accepted as one group, genetically these deer are farther apart than White-Tailed and Black-Tailed Deer in North America.