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
Flower's gerbil varies in color from pale cinnamon to tawny with an inconspicuous dorsal stripe.It has long ears which are unpigmented. The hind feet have hairy soles. It is usually between 111–213 mm in body length with the tail, usually longer than the body (140–158 mm). It weighs approximately 49–63 gm. The Flower’s gerbil is nocturnal and lives in burrows. It feeds on insects and plants. The breeding season of Flower’s gerbil is known to be from May to December. A female's litter usually contains four young after a gestation period of 20 to 22 days. The young are born with closed