Roe deer is one of the most common game animals in Estonia. It is an even-toed ungulate in the Cervidae family. They have a light body and strong, but thin legs. In warm seasons, their pelage is reddish-brown. In the winter, it is greyish. Male roe deer are called bucks, while the female ones are does. Billy-goats have two-pronged antlers for most of the year, which they use for showing off during mating season. In the summer, they mostly feed on herbaceous plants. In the winter, they eat branches and sprouts.