When a white-tailed deer is alarmed, it may stomp its hooves and snort to warn other deer. It may also "flag" or raise its tail and show its white underside. They are very good runners. They can run at speeds of up to 30 miles an hour.
Mule deer males, or bucks, use their antlers to communicate dominance to other males and fitness to females. In the late fall, bucks will ward off other males and pursue females until successful. NPS Photo/Caitlin Ceci