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Silver dik-dik
The silver dik-dik (''Madoqua piacentinii'') is a small antelope found in low, dense thickets along the southeastern coast of Somalia and in ''Acacia-Commiphora'' bushland in the Shebelle Valley in southeastern Ethiopia.〔 It is the smallest species of dik-dik, with a length of , a height of and a weight of .〔Kingdon, J. (1997). ''The Kingdon Guide to African Mammals.'' Academic Press. ISBN 0-12-408355-2〕 Its back and flanks are grizzled silvery, while the limbs, ears and muzzle are ochraceus in colour.〔 Little is known about its status, but numbers are believed to be decreasing.〔
Together with the closely related Salt's dik-dik, this species forms the subgenus ''Madoqua'' in the genus ''Madoqua'' (other dik-diks are also in the genus ''Madoqua'', but the subgenus ''Rhynchotragus'').〔Ansell, W. F. H. (1972). Order Artiodactyla. Part 15. Pp. 1-84. ''in'': Meester, J., and H. W. Setzer, eds (1972). ''The mammals of Africa: An identification manual''Smithsonian Institution Press, Washington, D.C.〕 The taxonomy of this subgenus is complex and a matter of dispute. Though most recent authorities treat the silver dik-dik as a monotypic species,〔 the silver dik-dik has been suggested as a subspecies of the Swayne's dik-dik〔 (itself now usually treated as a subspecies of the Salt's dik-dik'').〔
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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