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
North African gerbil clear division between the dorsal and ventral colours. The legs and feet are white and the soles of the feet are bare. The tail is about 40% of the length of the head-and-body, and is bicoloured, golden-brown above and white below. The tip of the tail forms a pencil, a tuft of longer hair. The North African gerbil is found in Algeria, Egypt, Libya, Mali, Morocco, Niger, Sudan, Tunisia, and possibly Chad and Mauritania. Its habitat varies across its range, but in general it favours habitats with rocks and vegetation rather than sand. The North African gerbil lives in a