Landlocked country one, making them the biggest contiguous group in the world. Also, the Central Asian and Caucasian clusters can be considered contiguous, joined by the landlocked Caspian Sea. Mongolia is almost part of this cluster too, being separated from Kazakhstan by only , across Russian or Chinese territory. There are the following "single" landlocked countries (each of them borders no other landlocked country): If the Caucasian countries and Kazakhstan are counted as part of Europe, then Europe has the most landlocked countries, at 20. If these transcontinental countries are included in Asia, then Africa has the most, at 16. Depending on
Berbera gerbil Berbera gerbil The Berbera gerbil ("Gerbillus acticola") is distributed mainly in Somalia, but its range may extend into Ethiopia and Djibouti. It is endemic to the Ethiopian xeric grasslands and shrublands ecoregion. The Berbera gerbil has an average head-and-body length of and a tail of . It is a small gerbil, the upper pars being sandy orange, the individual hairs having grey shafts and orange tips. The flanks are rather paler, the hairs being white with orange tips, and the underparts are pure white, with a clear demarcation line between the dorsal and ventral pelage. There is a white patch