Mule deer

deer indigenous to western North America; named for large ears resembling mule

Mule deer (Odocileus hemionus) is a species of deers. They are sometimes called black-tailed deer. They live in western North America. Their name was given to them because of their mule-like ears. There are many subspecies, including the black-tailed deer.[1][2][3][4] Unlike the white-tailed deer, mule deer lives on land west of the Missouri River. They also live in the Rocky Mountains region of North America. Mule deer have been introduced to Argentina.

Mule deer
MuleDeer ModocCounty.jpg
Mule deer male and female in Modoc County, California
Scientific classification
O. hemionus
Binomial name
Odocoileus hemionus
(Rafinesque, 1817)


  1. Novak, R. M. (1999). Walker's Mammals of the World. 6th edition. ISBN 0-8018-5789-9
  2. Reid, F. A. (2006). Mammals of North America. 4th edition. ISBN 978-0-395-93596-5
  3. Heffelfinger, J. (Ver. 2, March 2011). Tails with a dark side: The truth about whitetail–mule deer hybrids.
  4. Geist, V. (1998). Deer of the world: their evolution, behaviour, and ecology. ISBN 978-0-8117-0496-0

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