The Mongolian gerbil is a small rodent native to Mongolia and northern China. They typically measure about 4 to 6 inches in length and have a long, furry tail. These animals are known for their burrowing habits and live in underground tunnels in the wild. Mongolian gerbils are popular pets due to their friendly nature and low maintenance needs. They are social creatures that thrive in pairs or small groups. In captivity, they require a spacious cage, bedding, and a balanced diet to stay healthy and active.