Cows are large, domesticated animals known for their characteristic black, brown, or white coats and large, curved horns. They have a heavy body with a prominent hump over their shoulders, a long tail, and ears that hang down. Females are called cows, males are bulls, while youngsters are called calves. They are herbivores and graze on grass and other vegetation. Cows have an important role in our lives, providing us with milk, meat, and leather, and in some cultures, they are considered sacred.