Claus Meyer / Greater Rhea (Rhea americana) portrait, threatened, Pantanal ecosystem, Brazil

John Waters / Barn Owl (Tyto alba) hunting/hovering, Somerset, UK, trained bird.

Tony Heald / Asian elephant (Elephas maximus) domesticated elephant working, picking reeds, Kaziranga National Park, Assam, India, March 2009.

John Waters / Barn Owl (Tyto alba) hunting/hovering, Somerset, UK, trained bird.

Suzi Eszterhas,Suzi Eszterhas / Bornean Orangutan (Pongo pygmaeus) baby climbing as it is trained to explore, looking down at carer. Orangutan Care Center, Borneo, Indonesia.

Juergen Freund / Bornean Orangutan (Pongo pygmaeus wurmbii) - 'Siswi' sawing a piece of firewood, Camp Leakey, Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice, Arctic circle Dive Center, White Sea, Karelia, northern Russia. Captive

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, with scuba diver in background, Arctic circle Dive Center, White Sea, Karelia, northern Russia, captive

John Waters / Tawny Owl (Strix aluco) adult female hiding behind tree trunk, trained bird, Somerset, UK, January

Kristel Richard / Lady riding a black Menorquin stallion, performing the bot or walking courbette of the Doma Menorquina, during the festival Mare de Deu de Gracia, in Mahon, Menorca, Spain 2012. Tourists are trying t...

Mark Carwardine / Domestic dog wearing muzzle, trained to track the endangered North Island Kiwi, Trounson Kauri Park, North Island, New Zealand, January 2009

Ernie Janes / Apricot tree (Prunus ameniaca) Moorpark variety in blossom trained against a wall in walled garden, UK, March.

Carol Walker / Spanish / Andalusian stallion performing Alta Escuela moves, rearing up, Andalucia, Spain