Laura Brown

珍·古道尔

Jane Goodall

饰：Self -Scientist

Jonathan Balcombe

Jonathan Balcombe

饰：Self - Scientist

Iain Douglas-Hamilton

饰：Self - Scientist,(as Ian Douglas-Hamilton)

Tony Fitzjohn

Clive Kennedy

Clive Kennedy

饰：Self

Bobbie Lee Jr.

饰：African Poacher

Edwin Lusichi

Russell A. Mittermeier

饰：Self - Scientist

Cynthia Moss

饰：Self - Scientist

Richard Bonham

饰：Self - Scientist

凯斯·大卫

Keith David

饰：Narrator

Grace Gabriel

饰：Self - IFAW

Albert Maritz

Albert Maritz

饰：Lawrence Anthony

Richard Ruggiero

饰：Self - Scientist

Sean Willmore

饰：Self - Ranger