Roland Seitre / Two Pelzen's gazelles (Gazella dorcas pelzeni) resting in shade under tree in grassland, Grand Barra, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) resting in shade under tree in grassland, Grand Barra, Republic of Djibouti.

Roland Seitre / Three Pelzen's gazelles (Gazella dorcas pelzeni) in desert landscape, Lac Abbe, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) portrait, Dikhil, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) walking over rocky ground, Dikhil, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) male, feeding, Dikhil, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) male, standing in desert landscape, Dikhil, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) male, walking across desert landscape, Dikhil, Republic of Djibouti.

Roland Seitre / Golden jackal (Canis aureus) with Pelzen's gazelle (Gazella dorcas pelzeni) grazing behind, Dorra, Republic of Djibouti.

Roland Seitre / Two Pelzen's gazelles (Gazella dorcas pelzeni) walking over rocks with mountainside in background, Djalelo, Republic of Djibouti.

Roland Seitre / Pelzen's gazelle (Gazella dorcas pelzeni) male, portrait, Decan, Republic of Djibouti.

Roland Seitre / Three Pelzen's gazelles (Gazella dorcas pelzeni) female, standing in grassland, Decan, Republic of Djibouti.

Ole Jorgen Liodden / Walrus (Odobenus rosmarus) underwater view, Edgeoya, Svalbard, Norway, June.

Staffan Widstrand / Wild Wonders of China / Yunnan Snub-nosed monkey (Rhinopithecus bieti) feeding on lichen, Ta Chen NP, Yunnan province, China.

Bruce Thomson / Water-holding frog (Cyclorana platycephala) in shallow pool after rain, Westmar, Queensland, Australia.