Fuzz on deer antlers are called velvet.
velvet
Deer antlers are made from bone. The velvet on the outside of the antlers carries the blood vessels to the antlers while they are growing. When they have grown to full maturity, the velvet dies and falls off.
Yes. Both sexes grow new antlers every year, underneath protective fur called velvet. When the antlers have finished growing, the velvet falls off. After the mating season, the antlers fall off.
If by they, you mean deer, then yes. Velvet covers deer's antlers and feeds the antlers the vitamins and minerals it needs to grow. There is a base at the base of each antler, and when the antlers have received enough vitamins and minerals, the base cuts off the blood flow to the antlers, causing the velvet to dry out, shrivel up, and fall off. The velvet is itchy, so the deer rub up against trees and such to help get the velvet off. Basically the only reason the deer's antler's bleed is because the blood may not be fully cut off and the deer still find it itchy so they try to scratch it off themselves.
Moose don't have horns. They are antlered mammals, much like elk or deer. The difference between horns and antlers is that antlers will typically be grown and fall off annually, whereas horns will grow only once. There are several reasons that moose have antlers. First, when the antlers grow and develop in the warmer months of the year, the antlers are covered in a fine velvet that is soft to the touch. Underneath the velvet flows a system of arteries and veins that circulate blood throughout the antlers. this acts as a cooling mechanism for the moose, keeping it cool in the hot months of summer. When the weather begins to cool down in fall, the moose will shed their velvet, with much bleeding, in order to turn their antlers into weapons. using trees and other objects as sharpening devices, moose peel the velvet from their antlers and sharpen their antlers in order to use them as a defense against predators and as a tool for finding a mate.
Deer grow a new set of antlers each year. The new antlers are covered in a kind of velvet. Because of fighting and searching for food the velvet becomes rather tatty, often hanging down in strips. This can reduce the animals vision, which is highly important to such an animal. So it rids itself of the offending velvet by rubbing its antlers against trees. The bare antlers are used especially in the "rutting" season (the mating season) when the strongest deer, usually with the largest and perfectly shaped antlers, will be able to assemble his own herd of females. Later in the year the antlers are "cast" off, but the material of which they are made is not wasted because the deer will gnaw away at the antlers to take in the stuff needed for antlers to grow once more.
The fur-like soft stuff is called 'velvet.'
During the late fall early winter months, deer velvet grows. At the base of each antler is a ring, and that ring controls whether blood is allowed to flow into the antlers. This blood flow determines whether the antlers grow or not. The blood flows into the antler and supplies vitamins and minerals needed for the deer to grow bigger antlers, and since the blood needs a cover, velvet is formed around the blood vessels. When the antlers receive enough vitamins and minerals, the ring at the base of the antler cuts off the blood flow, causing the velvet to dry out, shrivel up, and fall off.
velvet
velvet
By rubbing them off trees bark or in the duel with another deer