Juan Carlos Munoz / Magellanic penguin (Spheniscus magellanicus) flapping its wings, with another lying down. Puerto Deseado, Patagonia, Argentina, Nov 2008

Bernard Castelein / Cinereous / European Black Vulture (Aegypius monachus) in dispute with an Eurasian Griffon Vulture (Gyps fulvus), alongside a Himalayan Griffon (Gyps himalayensis) and Long-billed Vulture (Gyps indicu...

Petra Wegner / Two Miniature Schnauzers, black-silver and pepper-and-salt coated, sitting in autumn foliage

Andrew Parkinson / Pair of Great Crested Grebes (Podiceps cristatus) during their elaborate courtship dance. March. Derbyshire, UK, March (non-ex)

Andrew Parkinson / Pair of Mallard ducks (Anas platyrhynchos) on a lake in dawn, Derbyshire, UK. April (non-ex)

Bence Mate / Keel-billed Toucan (Ramphastos sulfuratus) in aggressive encounter with a Montezuma Oropendola (Psarocolius montezuma), Laguna del Lagarto, Santa Rita, Costa Rica

Alex Mustard / Female Grey seal (Halichoerus grypus) startled. Lundy Island, Devon, England, UK.

Kim Taylor / Three-eyed Iguanid Lizard (Chalarodon madargascariensis) portrait standing.

Steve Knell / Harlequin duck (Histrionicus histrionicus) male standing in rapids, Iceland, May

Alex Hyde / Head and forelegs of tropical Katydid {Tettigoniidae} photographed on white background. Masoala Peninsula National Park, north east Madagascar.

Mark Moffett / Golden Poison Dart Frog (Phyllobates terribilis) being used to poison an arrow that makes it deadly enough to bring down game, Colombia

Sergey Gorshkov / Kamchatka Brown bear (Ursus arctos beringianus) standing beside lake looking for salmon, Kamchatka, Far east Russia, August