Espen Bergersen / European elk / Moose (Alces alces) photograped in midnight sun. Troms, Northern Norway. June

Espen Bergersen / European elk / Moose (Alces alces) feeding close to a house. Troms, Northern Norway. May

Ole Jorgen Liodden / Herd of Moose (Alces alces) following in line in each other's tracks, aerial view, Valdres, Norway, February.

Donald M. Jones / Moose (Alces alces) bull lip-curling, Denali National Park, Alaska

Sven Zacek / Moose (Alces alces) herd on a cold -18 C morning amongst frozen willow bushes, with snow, in Tartumaa, Estonia. January. Highly commended in the Mammals category of the GDT competition 2013.

Sven Zacek,Sven Zacek / Two bull Moose (Alces alces) sizing each other up during the annual rut, after sunset with migrating geese in flight. Western Estonia, September.

Steven Kazlowski / Moose (Alces alces) bull adult swims across a lake in Denali National Park, Interior of Alaska, summer, USA

Steven Kazlowski / Moose (Alces alces) cow suckling her newborn calves. Tony Knowles Coastal Trail, Anchorage, south-central Alaska, May.

Steven Kazlowski / Moose (Alces alces) newborn calves playing in spring vegetation. Tony Knowles Coastal Trail, Anchorage, south-central Alaska.

Steven Kazlowski / Moose (Alces alces) cow with a newborn calf. Tony Knowles Coastal Trail, Anchorage, south-central Alaska, May.

Steven Kazlowski / Moose (Alces alces) cow with a newborn calves grazing on spring grass. Tony Knowles Coastal Trail, Anchorage, south-central Alaska, May.

Steven Kazlowski / Moose (Alces alces) newborn calf kneels to feed on vegetation. Kincaid Park, Anchorage, south-central Alaska, May.