The chevrotain, also known as mouse deer, is a small even-toed ungulate that make up the family Tragulidae
Temporal range: Early Oligocene – Recent
Mouse deer live in Asia. They are about the size of a hare, with short, thin legs. They stamp their small feet to signal to each other. Mouse deer are extremely nervous. When they are surprised, they freeze immediately, and then run away in a zig-zag through the forest.