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
Morgan's gerbil mouse breeding season lasts from October to April in much of the range, but is shorter in more southerly, colder, climes. The litters of three to nine young reach sexual maturity at six to eight weeks of age. Individuals rarely live for more than nine months. Morgan's gerbil mouse Morgan's gerbil mouse ("Eligmodontia morgani"), also known as the western Patagonian laucha, is a South American species of rodent in the family Cricetidae. It is named for J. P. Morgan, one of the sponsors of the expedition that first identified the species. Morgan's gerbil mouse is a slender, mouse-like rodent with large