Pakistani ceremonial guard outside Sikh Temple Gurdwara of Arjan Dev, Lahore, Pakistan

Changing of the Guards, Evzoni Soldier, Syntagma square, Athens, Greece

Indian soldier keeping watch in front of a Buddhist prayer wheel, Leh, Northern India, India, Himalayas

Motorcyclist in a curve on a country road with guard rail for protection, Eifel, Germany, Europe

Dummy with the equipment of a mine rescuer

Defence tower of the old city walls, Jueterbog, Flaeming, Brandenburg, Germany, Europe

Common hippopotamus or hippo (Hippopotamus amphibius). Okavango Delta. Botswana

A small Red-Spotted Guard Crab (Trapezia tigrina) keeper of the corals of the bateau pass, Mayotte

A white rhinoceros, Ceratotherium simum, in Masai Mara Rhino Sanctuary, escorted by anti-poaching guard. Masai Mara National Reserve, Kenya, Africa.