Female tickling videos

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Increasingly, however, researchers are focusing more on the pursuit of animal happiness. In short, there is far more to tickling that you would think. Historically, studies in this area have been limited, and those that have taken place focused on a handful of study species: mostly rats, as well as dogs and great apes. For social animals like primates, tickling is a great way of reinforcing friendships in a controlled way. Recordings of it could even be used to decrease stress in other dogs. The same is true with rats. Although laughter and tickling are not exactly top of most research agendas, limited studies appear to show some similarities with more distantly related mammals.

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This work, published in , appeared to confirm that human laughter developed from vocalisations found in the common ancestors we share with apes.

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Why humans, chimpanzees and rats enjoy being tickled

That said, it is not easy to test whether the tickling and laughter demonstrated by these creatures is analogous with our own. As with the chimpanzees, Simonet found that a laughter-like "breathy pronounced forced exhalation" was associated with play. Rats are the go-to mammal for researching pretty much anything, and tickling is no exception. On the face of it, being ticklish is completely pointless. It's the only joke you can tell to both human babies and chimpanzees. Having already identified high-frequency noises emitted by playing rats, inaudible to the human ear, Panksepp was struck by the idea that they could be distantly related to the noises made by playing humans.

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