Why dogs smile & chimpanzees cry [videorecording] / produced by fleisherfilm, inc. in association with Devillier Donegan Enterprises for Discovery Channel.
Program content c1999. Narrated by Sigourney Weaver.
Summary:
Documentary filmmakers and scientists in fields as diverse as paleontology, embryology, and neurobiology report evidence in support of the emotional life of wild and domestic animals.
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