"Intoxication with psychoactive drugs is not an exclusively human proclivity. Animals in the wild will also voluntarily and repeatedly consume psychoactive plants and fungi",according to "The Compass of Pleasure" David Linden's book that explores how our brains make fatty foods, orgasm, exercise, marijuana, generosity, vodka, learning, and gambling feel so good.
AN ABSOLUTE PLEASURE TO READ!
http://compassofpleasure.org/bob-dylan-and-siberian.html
