Fallow deer are medium-sized. They are larger and less graceful than roe deer and smaller than red deer. Unlike these two species, and unusually for a wild mammal, fallow deer occur in many colour forms, ranging from whitish, through tan with white spots, to almost black. In all colour forms they have long tails which they constantly twitch. For much of the year, male fallow deer have palmate antlers, meaning they are similar to the shape of the palm of a hand, quite unlike the antlers of red deer which are sharply tined. Females have no antlers.