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 of fat-tailed gerbils, because this small rodent has not been kept as a pet that long and often. But small rodents have generally the same ailments. An ailment that relatively often can be seen in fat-tailed gerbils are bite wounds at their tail, because fighting fat-tailed gerbils try to bite in each other's thick tail. Fat-tailed gerbil The fat-tailed gerbil ("Pachyuromys duprasi") is a rodent belonging to subfamily Gerbillinae. It is the only member of the genus "Pachyuromys". These rodents are the most docile species of the Gerbil subfamily. It is also called the duprasi gerbil. Other common English names: