Pikas are small mammals related to hares and rabbits. They also are known as conies, rock rabbits, and other local names. They are found in Asia and western North America. Their length ranges from five to 12 inches (12.5-30 cm) and weight from four to 14 ounces (110-400 g). Pikas have short legs, rounded ears, no visible tail, and soft, dense, and usually grayish brown or reddish fur. They live mostly in colonies. Pikas have evolved through surviving winters without hibernating. In the summer they begin to gather grasses and other plants and spread them to dry. The vegetation is piled into stacks for food during the winter.