Dwarf Fat Tailed Jerboa

The dwarf fat-tailed jerboa (Pygeretmus pumilio) is a species of rodent in the family Dipodidae. It is found in China, Iran, Kazakhstan, Mongolia, and Russia. They mostly reside in desert environments which can explain their size. They go long periods of time without food and water, which means they need a lower metabolic rate, and can be a reason for their size.^[2]

References

• Holden, M.E.; Musser, G.G. (2005). "Family Dipodidae". In Wilson, D.E.; Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 871–893. ISBN 978-0-8018-8221-0. OCLC 62265494.