Protest, italy. Demonstrators soaked by polices water cannon during the g8 summit in genoa

Springbok sparring (Antidorcas marsupialis), Kgalagadi Transfrontier Park, South Africa, Africa

Two male impala (Aepyceros melampus) sparring, Serengeti National Park, Tanzania, East Africa, Africa

A giant tortoise feeding on leaves and a bird on the Galapagos Islands

The back foot of a giant tortoise on the Galapagos Islands

Giant tortoise feeding on leaves on the Galapagos Islands

Giant tortoise feeding on leaves on the Galapagos Islands

Giant tortoise feeding on leaves on the Galapagos Islands

Robin (Erithacus rubecula) displaying with rival on a mossy wall. Loch Awe, nr Oban, Scotland, UK

King Penguin (Aptenodytes patagonicus) breeding and nesting colonies on South Georgia Island, Southern Ocean.

African bush elephant (Loxodonta africana) confronts male Common waterbuck (Kobus ellipsiprymnus) in Chobe National Park, Botswana

Rhinoceros confronting safari vehicle, Southern Africa

Green Honeycreeper (Chlorophanes spiza) confronting a Saffron-crowned Tanager (Tangara xanthocephala), Colombia

Sword-billed Hummingbird (Ensifera ensifera), female, confronting a Buff-tailed Coronot (Boissonneaua flavescens), Colombia