Mongolian gerbil Mongolian gerbil Meriones unguiculatus, the Mongolian gerbil or Mongolian jird, is a small rodent belonging to the subfamily Gerbillinae. It is the most widely known species of the gerbil subfamily, and is the most commonly kept as a small house pet or experimental animal. Under those conditions, it is known as the domesticated gerbil. Like the Syrian or golden hamster, it was first brought to the United States in 1954 by Dr. Victor Schwentker for use in scientific research. Forty-four pairs were caught in Mongolia and brought to England. They were described as having "squirrel colors... with long furry tails."
Anderson's gerbil large with a dark fur color. The ears of this animal is distinctive in that it does not have the white patch behind the ear as others of the genus Gerbillus. Typical of the species in Gerbillus, Anderson's gerbil has large eyes with a black ring around them. There is a distinct white patch that appears above each of the eyes. The gerbil has long hind limbs while the front limbs are shorter. The length Anderson's gerbil is estimated between 19–27 cm. The tail length can vary from 11–15 cm. The mammal can weigh from 15.9-38.4 grams. The Anderson's gerbil