Key deer are classified as a subspecies of the much larger virginia white-tailed deer the key deer is the smallest of the 28 subspecies of virginia white-tailed deer bucks stand from 28 inches to 32 inches at the shoulder and weigh an average of 80 pounds.
Key deer can tolerate small amounts of salt water, but fresh water is essential for their survival they must also have suitable habitat to ensure their future existence they must also have suitable habitat to ensure their future existence.
Taxonomy the key deer is a member of the cervidae family of the order artiodactyla, class mammalia it was first recognized as a subspecies distinct from the races of o v osceolaand o v virginianus when it was described by barbour and allen (1922. The shoulder height of key deer is between 24-32 inches does weigh 45 to 65 pounds while bucks weigh 55 to 80 rutting season activities begin in september, peaking in early october and decreasing gradually through november and december.
The key deer is a subspecies of the white tailed deer but they are much smaller they males average in size from 50 to 75 pounds they males average in size from 50 to 75 pounds they females are from 40 to 65 pounds. The key deer are exactly like white tailed deer everywhere, only much smaller they evolved to be small because of their island habitat, where food is limited and cannot support large herbivores.
The key deer (odocoileus virginianus clavium) is the smallest subspecies of the white-tailed deer prior to declines associated with hunting, habitat loss and car collisions, some 600-700 ranged across the extreme southern tip of florida from about key vaca to key west  key deer swim easily between islands. The key deer is the smallest subspecies of white-tailed deer the largest bucks grow to less than a yard high at the shoulders and weigh about 80 pounds the does are 24 to 28 inches at the shoulders and weigh about 65 pounds.