The Columbian black-tailed deer (Odocoileus hemionus columbianus) has a broad tail with black fur running vertically downwards. Its large ears move independently. It is found in western North America, from Northern California into the Pacific Northwest of the United States and coastal British Columbia in Canada. Columbian black-tailed deer are smaller and darker than mule deer. Black-tailed deer are reddish-brown in summer and brownish-grey during winter.