Jeff Wilson / Boy studying Koran inside Mosque, Lahore, Pakistan, 2006

Kristel Richard / A gaucho (cowboy) tries to remain on the back of a wild horse rearing vertically (Equus caballus) in the rodeo during the Fiesta de la Patria Gaucha, Tacuarembo, Uruguay, April 2008

Wild Wonders of Europe / Hamblin / Konik horses, mares and a stallion encouraging young foal to stand up, Oostvaardersplassen, Netherlands, June 2009

Stephen Dalton / Spitting spider (Scytodes thoracica) approaching mosquito on glazed surface, UK, Scytotidae

Bernard Castelein / Blackbuck (Antilope cervicapra) two males, stand off at sunrise, Rajasthan, India

Jeff Vanuga / Two male Elk {Cervus canadensis} in velvet, resting in foggy meadow at dawn, Yellowstone National Park, Wyoming, USA, July

Michael Hutchinson / Lesser Celandine (Ranunculus ficaria) in deciduous woodland clearing with bluebells and stand of beech trees in background, North Somerset, UK

Tim Fitzharris / Stand of conifers in the Elk Mountains near Crested Butte, Colorado

Peter Blackwell / Three Zebra stand with herd of Wildebeest (Equus quagga) Masai Mara, Kenya.

Charlie Summers / Eared grebes (Podiceps nigricollis) stand erect in water during courtship, North Park, Colorado, USA. June.

Charlie Summers / Eared grebes (Podiceps nigricollis) stand erect on water, din courtship behaviour, North Park, Colorado, USA. June.

Nick Upton / Bloody-nosed beetle (Timarcha tenebricosa) in a stand of its food plant Goose grass / Cleavers (Galium aparine) in a chalk grassland meadow, Wiltshire, UK, May.