white-tailed deer

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A North American deer (Odocoileus virginianus) having a coat that is grayish- or reddish-brown, a tail that is white on the underside, and many-branched antlers in the male.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A medium-sized deer found throughout most of North and Central America and northern portions of South America; Odocoileus virginianus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun common North American deer; tail has a white underside