The mule deer (Odocoileus hemionus) is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. Two subspecies of mule deer are grouped into the black-tailed deer.
Similar species: Even-toed Ungulates
By travismorhardt
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Uploaded Mar 10, 2014. Captured Mar 9, 2014 18:00 in Scenic Drive, Theodore Roosevelt National Park, Grassy Butte, ND 58634, USA.
