Although the fennec fox is the smallest of all fox species, it boasts the largest ears, relatively speaking. Beyond making these tiny, Chihuahua-sized foxes inimitably adorable, those big ears help the animals dissipate body heat. The Saharan fennec fox is the national animal of Algeria, and is a nocturnal hunter of rodents, insects, birds and eggs. It burrows underground during the heat of the day. (Photo by Traer Scott/Chronicle Books)
