Shoes for sale in a Bangkok market, Thailand

Shoes for sale on a market in Bangkok, Thailand

Hippopotamus (Hippopotamus amphibius), Masai Mara, Kenya, Africa

Hippopotamus (Hippopatamus amphibius), yawning or threatening adult, St. Lucia Wetland Park, South Africa, Africa

Plains zebra, common zebra or Burchell's zebra (Equus quagga), being stroked through an open car window, Serengeti Park, Hodenhagen, Lower Saxony, Germany, Europe

Hippopotamus (Hippopotamus amphibius), two fighting, Murchison Falls National Park, North Uganda, Africa

Hippopotamus (Hippopotamus amphibius), measuing their strength in a threat display, Orangi River, Serengeti, Tanzania, Africa

Hippopotamus (Hippopotamus amphibius), two fighting, Murchison Falls National Park, North Uganda, Africa

Hippopotamus (Hippopatamus amphibius), yawning or threatening adult, St. Lucia Wetland Park, South Africa, Africa

Donkey being disturbed while eating, mountain village Olympos, Karpathos, the Aegean, Dodecanese, Greece, Europe

Franconian aurochs cattle harnessed to pull a cart, Franconian Open-air Museum of Bad Windsheim, Bavaria, Germany, Europe

Hippopotami (Hippopotamus amphibius) in the outdoor enclosure of the ZOOM Erlebniswelt leisure park, Africa region, Gelsenkirchen, North Rhine-Westphalia, Germany, Europe

Hippopotamus (Hippopotamus amphibius) with mouth wide open, Masai Mara National Reserve, Kenya, Africa

Portrait of a South American Tapir (Tapirus terrestris), Gran Chaco, Paraguay, South America

Mouflon (Ovis ammon musimon), flehmen response during mating season

Hippos (Hippopotamus amphibius), Tanzania, East Africa

Wisent or European Bison (Bison bonasus), open-air enclosure, Bavarian Forest National Park, Bavaria, Germany, Europe