A black-tailed deer (Odocoileus hemionus sitkensis) munches on fireweed (Chamerion angustifolium) off of the coast of British Columbia. Black-tailed deer are a smaller subspecies of the more easily recognized mule deer. They are distinguished by their black-topped tails, diminutive size, and smaller metatarsal glands.
A study of blacktail deer antlers. First is a doe on bottom left (no antlers), then a button buck, (male with stubs but no antlers yet/antlers shed,) a six-point buck, a strange deer with weird antlers (testosterone disorder?), and a yearling buck who had lost one antler, but not the other. Then a random shed antler.
The Sitka Blacktailed Deer of the Pacific Northwest coast often swim between the desolate islands that they call home, during this time they are often spotted by fishermen and sailors. Despite the water temperature averaging between 40 and 50 degrees Fahrenheit, the deer can swim for miles to reach their destination.