Deer are the only animals with antlers. Antlers are solid bone growing from the foreheads of male deer and both male and female reindeer. The male deer (“buck”) uses his antlers in mating season to fight other bucks, and sheds his antlers seasonally.
When new, antlers are soft and tender, and covered with furry skin called velvet. The antlers quickly turn bony and hard and the velvet rubs off. A young male’s first antlers look like straight spikes. Older males have antlers with many braches, called points. – Dick Rogers