List of gerbillines
Gerbillinae is a subfamily of mammals in the rodent family Muridae, which in turn is part of the Myomorpha suborder in the order Rodentia. Members of this subfamily are called gerbillines and include gerbils, jirds, and sand rats. They are found in Africa and Asia, primarily in shrublands, grasslands, savannas, and deserts, though some species can be found in forests and coastal areas. They range in size from the pouched gerbil, at 5 cm (2 in) plus a 3 cm (1 in) tail, to the large Aden gerbil, at 22 cm (9 in) plus a 11 cm (4 in) tail. Gerbillines generally eat seeds, roots, nuts, grass, and insects, as well as grain and other vegetation. Few gerbillines have population estimates, but the western gerbil is categorized as endangered, and Dahl's jird is categorized as critically endangered, with a population of below 2,000.
The 102 extant species of Gerbillinae are divided into 14 genera, with 49—nearly half—in the Gerbillus genus. The Mongolian gerbil, as well as some other species such as the fat-tailed gerbil, are kept as pets. Several extinct prehistoric gerbilline species have been discovered, though due to ongoing research and discoveries, the exact number and categorization are not fixed.