Why Dogs Smile & Chimpanzees Cry

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Landscape · Light Landscape · Dark Portrait · Light Portrait · Dark

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Full Cast & Crew

Cast

Sigourney Weaver Self - Narrator

Martyn Colbeck Self - Wildlife Filmmaker

Michael deGruy Self - Wildlife Filmmaker

Roger Fouts Self - Chimpanzee Human Communication Institute

Dereck Joubert Self - Wildlife Filmmaker

Beverly Joubert Self - Wildlife Filmmaker

Marc Bekoff Self - University of Colorado, Boulder

Frans de Waal Self - Yerkes Regional Primate Research Center

Nicholas Dodman Self - Tufts University School of Veterinary Medicine

Jim Dutcher Self - Wildlife Filmmaker

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