Black Caiman in swamp, Ibera National Park, Argentina, South America

Close-up of head of Black caiman (Melanosuchus niger), Lake Yacumama, Puerto Maldonado, Tambopata Province, Madre de Dios, Peru, South America

Black caiman (Melanosuchus niger) swimming in the Madre de Dios River, Manu National Park, Peruvian Amazon, Peru, South America

Black caiman (Melanosuchus niger) swimming in the Madre de Dios River, Manu National Park, Peruvian Amazon, Peru, South America

Black caiman (Melanosuchus niger) lurks in the water, Mamiraua sustainable development reserve, Amazonas, Brazil, South America

Black caiman (Melanosuchus niger), lurks in the water, Mamiraua sustainable development reserve, Amazonas, Brazil, South America

Black Caiman, night time in the Amazon, Ecuador.

Caiman, Ecuador.

Black caiman (Melanosuchus niger), lurks in the water, Mamiraua sustainable development reserve, Amazonas, Brazil, South America

Black Caiman, night time in the Amazon, Ecuador.

Black caiman (Melanosuchus niger) lurks in the water, Mamiraua sustainable development reserve, Amazonas, Brazil, South America

Black caiman, Melanosuchus niger, lurks in the water, Mamiraua sustainable development reserve, Amazonas, Brazil

Black Caiman on river bank, Amazonas Brazil

Black Caiman on river bank, Amazonas Brazil