Lorraine Bennery / Blue-eyed lemur (Eulemur flavifrons) male looking down from branch. Sahamalaza, Madagascar.

Lorraine Bennery / Ankarana sportive lemur (Lepilemur ankaranensis) looking out from hole in tree. Analamera National Park, Madagascar.

Giri Cavale / Melanistic leopard / Black panther (Panthera pardus) on territorial patrol on track, Nagarahole National Park, Nilgiri Biosphere Reserve, Karnataka, India.

Michael Quinton / Northern Hawk Owl (Surnia ulula) peering from nest, Alaska

Benjamin Olson / Gentoo Penguin (Pygoscelis papua) wet from rain due to climate change, Antarctica

Michael Quinton / American Marten (Martes americana) emerging from tree cavity, Alaska

Tui De Roy / Nazca booby (Sula granti) portrait, Galapagos, Ecuador.

Ingo Arndt / Grizzly bear (Ursus arctos horribilis) portrait, Lake Clark National Park, Alaska, USA, September.

Tony Wu / Humpback whale (Megaptera novaeangliae) adult female at rest. The tubercles on the whale's head are clearly visible, as are the barnacles (Coronula diadema), whale lice (Cyamus boopis), and hairs on t...

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) tossing away the husk from hazelnut, Cairngorms National Park, Highlands, Scotland, UK, November.

Sebastian Kennerknecht / Snowy Plover (Charadrius nivosus) biologist, Ben Pearl, picking up chick from mud flat in salt pond, Eden Landing Ecological Reserve, Union City, Bay Area, California

Stephen Dalton / Horse fly (Tabanus sp) male taking off from poppy seed-head (Papaver rhoeas) Sussex, UK