Pete Oxford / Black caiman (Melanosuchus niger) catching prey beside fisherman in boat at night, rainforest, Rupununi, Guyana, Endangered

Pete Oxford / Black caiman basking with butterfly on snout {Caiman niger} Manu National Park, Peru

Staffan Widstrand / Close up of Black caiman leg and foot. {Caiman niger} Manaus, Brazil

Pete Oxford / Black caiman {Caiman niger} juvenile on Royal water lily pad (Victoria amazonica) Iwokrama Reserve, Guyana, South America

David Pattyn / Black vulture (Coragyps atratus) scavenging a dead Spectacled Caiman (Caiman crocodilus) floating in the Rio Cuiaba, Pantanal, Mato Grosso, Brazil.

ZSSD / Black Caiman (Melanosuchus niger) young, native to South America

Roland Seitre / Sra Ternura, wife of Sr Arteaga, owner of Estancia Tacuaral, and her daughter relaxing on a hammock made from the skin of a Black Caiman, Santa Ana del Yacuma, Beni, Bolivia, July 2008

Pete Oxford / Black Caiman (Caiman / Melanosuchus niger) captured at night for tagging and release, Yupukari Rupununi, Guyana, model released, January 2010

Pete Oxford / Close up of eye of Black Caiman (Melanosuchus niger) captive, Yupukari, Rupununi, Guyana

Nick Garbutt / Black Vulture (Coragyps atratus) standing on a dead bloated Yacare Caiman (Caiman yacare) floating down the Cuiaba River, Northern Pantanal, Matto Grosso State, Brazil. September

Christophe Courteau / Black vulture (Coragyps atratus) feeding on dead Caiman (Crocodilus caiman) in river, Pantanal, Brazil, South America, July

Pete Oxford / Black Caiman (Melanosuchus niger), Iwokrama Rainforest Reserve, Guyana