Although goats and sheep are closely related and some wild sheep look very goat-like, they differ in several obvious ways.
Goats tend to have curved-back, scimitar-shaped horns, instead of outward-curling ones. (The horns of some goats, such as the Himalaya markhor, are spiral or corkscrew.) Male and female goats have horns, whereas only male sheep, or rams, have horns. Most kinds of goat have beards but sheep do not.
Goats have short, upturned tails instead of the long, hanging tails of sheep.