David Fleetham / Blue-spotted Sea Urchin (Astropyga radiata) expelling waste from the sac in the center of it's body. Maui, Hawaii.

Nigel Cattlin / Glasshouse mealy bug (Pseudococcus viburni) honeydew from infestation on Lemon (Citrus limon) fruit, cultivated in conservatory.

Ingo Arndt / Car parked under Common starling (Sturnus vulgaris) roost covered with droppings, Rome, Italy. January 2009

Solvin Zankl / Brown hyena (Hyaena brunnea) urinating, Sperrgebiet National Park, Namibia, December.

Solvin Zankl / Droppings and urine of brown hyena Hyaena brunnea), Sperrgebiet National Park, Namibia, November.

Markus Varesvuo / Black guillemot (Cepphus grylle) perched on rock, defecating, Norway, July

Ammonite / Hippopotamus (Hippopotamus amphibius) dung spreading with tail, footage taken at night using thermal camera technology, Masai Mara, Kenya.

Laurent Geslin / Urban Red fox defecating {Vulpes vulpes} London, UK

Mark Carwardine / Amazon river dolphin, pink river dolphin or boto (Inia geoffrensis) Rio Negro, Brazil (Amazon) - wild animal urinating Threatened species (IUCN Red List)

Georgette Douwma / Edible sea cucumber (Holothuria edulis) extruding sand, Manado, North Sulawesi, Indonesia

Georgette Douwma / Greenthroat or Singapore parrotfish (Scarus prasiognathus), large school of terminal males leaving droppings of ground up coral rock, Andaman Sea, Thailand.

Bryan and Cherry Alexander / Wet ground outside house; few houses have toilets so most people use buckets that they empty outside their homes. Neshkan, Chukotskiy Peninsula, Chukotka, Siberia, Russia, 2010