Black-tailed deer(Odocoileus hemionus columbianus) at Point Reyes National Seashore, California, United States.
Date 11 January 2013, 23:22:03
Author Frank Schulenburg
Source: https://commons.wikimedia.org/wiki/File:Cervus_canadensis_nannodes_(male_and_female),_Point_Reyes_National_Seashore.jpg

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. The Columbian black-tailed deer (Odocoileus hemionus columbianus) is found in western North America, from Northern California into the Pacific Northwest and coastal British Columbia.
Order: Artiodactyla
Family: Cervidae
Subfamily: Capreolinae
Genus: Odocoileus
Species: Odocoileus hemionus
Subspecies: Odocoileus hemionus columbianus (Richardson, 1829)