A male deer is referred to as a buck, and a female a doe. In Pennsylvania, the average adult buck weighs about 140 pounds and stands 32 to 34 inches at the shoulder.

During mating season, male deer experience an increase in testosterone and gland secretions, which makes them more aggressive, less afraid, and singularly focused on finding a mate.

The average weight of an adult male is 203 lb (maximum, 405 lb). The average weight of a female is about 155 lb (maximum, 218 lb). Beaver; Big Brown Bat; American Black Bear; White-tailed Deer; Bobcat ...

Fascinating ways animals prepare for fall. Male deer fight for mates, ladybugs stuff themselves silly, the only known "hibernating" bird prepares for its slumber, and more.