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Download full textPanksepp, Jaak; Burgdorf, Jeffrey – American Journal of Play, 2010
In this reprint of a seminal article, once considered quite controversial, the authors discuss their radical claim that rats laugh. Even more provocative, the authors found that this rat-joy sound, especially evident during play, could be amplified dramatically by what they formally call heterospecific (cross-species) handplay (tickling). The…
Descriptors: Animals, Animal Behavior, Play, Emotional Response
