Mongolian gerbil They are somewhat larger than mice, with a body about long (and a tail of similar length), with a body mass averaging in females and in males. The Mongolian gerbil is classified as a "prohibited new organism" under New Zealand's Hazardous Substances and New Organisms Act 1996, preventing it from being imported into the country. The species is also prohibited in the US state of California. "Meriones unguiculatus" evolved on the semideserts and steppes of Mongolia. There, they developed long legs for jumping and running from predators, teeth to deal with hard seeds and plant matter, and water conservation techniques
Guinean gerbil well-haired and bicoloured, being dark above and pale beneath, with a tuft of long dark hairs at the tip. The Guinean gerbil is nocturnal. It excavates a fairly complex burrow system that goes as deep as . The average size of the home range of the Guinean gerbil is . Little is known about the animal's diet. In western Senegal, breeding takes place in the wet season and continues into the dry season. Litter sizes average four or five. Guinean gerbil The Guinean gerbil ("Gerbilliscus guineae") is a species of gerbil found in Burkina Faso, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory