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
Fat-tailed gerbil many rodents can react allergically to them, and may develop respiratory problems. Aspen wood shavings are considered to be the best. They also need to take a sand bath regularly to prevent their fur from becoming greasy. Fat-tailed gerbils will make a nest; this may be underground in their burrow, on the surface in the bedding, or in a nesting box. Fat-tailed gerbils can be kept occupied by giving them gerbil toys, for example an exercise wheel. Keeping a breeding pair can be somewhat difficult. It is possible to keep fat-tailed gerbils singly, like Syrian hamsters. Fat-tailed gerbils are sociable