The least gerbil (Gerbillus pusillus) is distributed mainly in South Sudan, southwestern Ethiopia, Kenya, and Tanzania. References Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore. Database entry includes a brief justification of why this species is of least concern Database entry includes a brief justification of why this species is of least concern Gerbillus Rodents of Africa Mammals described in 1878 Taxa named by Wilhelm Peters