- Known As: Muleys. Blacktail, Columbian Black-Tailed Deer
- Height: 31 to 42 inches at shoulders
- Length: 3.9 to 6.9 ft.
- Weight: 175 lbs
Seasons vary but are primarily in August and September.
- Habitat: In addition to movements related to available shelter and food, the breeding cycle is important in understanding deer behavior. The "rut" or mating season usually begins in the fall as does go into estrus for a period of a few days and males become more aggressive, competing for mates. A buck's antlers fall off during the winter, to grow again in preparation for the next season's rut. The annual cycle of antler growth is regulated by changes in the length of the day.
- Diet: Mule deer consume a wide variety of plants, and their preferences vary widely geographically as well as seasonally, but they are primarily browsers on woody vegetation and eat relatively little grass. They readily adapt to agricultural products and landscape plantings. In summer, mule deer chiefly forage on not only herbaceous plants, but also various berries (including blackberry, blueberry, salal, and thimbleberry). They also use grasses more than in winter.