Why Dogs Smile and Chimpanzees Cry (1999)

Is it human conceit to attribute emotions to animal actions, or are emotions basic to life on earth? Wildlife filmmakers and scientists make a convincing argument for the latter in this gripping film.

IMDb rating	7.7
Producers	Discovery Channel
Original title	Why Dogs Smile and Chimpanzees Cry
Directors	Carol L. Fleisher
Writers	Paula Deats, Carol L. Fleisher

Cast

Sigourney Weaver

as Narrator