Caps, hats, helmets, and hoods--they keep you warm, or cool, or dry. They can stop sunlight from getting in your eyes or protect your skull from injury. And, lots of animals have their own special form of headgear, too! From the two scaly horns that help African adders find food to the feathers kingfishers use to communicate, see just what dozens of creatures do with their manes, crests, and other head-topping adornments. Some, like elks, need their antlers to fight. Others, including decorator crabs, adorn themselves in a homemade headdress that blends with their surroundings and keeps them safe. And, of course, just like us, animals wear hats to look pretty and for play!