It is no laughing matter…or maybe it is…that around 65 animal species have been found to laugh just like humans can.
Researchers from California have combed through past studies of animal behaviour looking of records of vocal play signals that might signify a version of laughter.
They said that the findings may help us in better understanding the form and function of our own human laughter and its role in the evolution of social behaviour.
In a study undertaken by anthropologist Sasha Winkler and communication researcher Greg Bryant, the duo looked for information on whether recorded vocalisations were loud or quiet, short or high, high-pitched or low pitched, and other qualities.
They then sought out to see if these matched any feature of ‘play sounds’ which are thought to help animals emphasise when they are being non-aggressive when they play.
‘When we laugh, we are often providing information to others that we are having fun’ said Winkler. ‘As such laughter is our human version of an evolutionary old vocal play signal.’
It was found that animals such as cows, elephants, dolphins, dogs, foxes, mongooses, seals, various primates such as chimpanzees and gorillas and even parakeets were known to produce such play sounds.
And if you’e wondering, spotted hyenas, which make giggling and cackling noises, actually do this when they feel threatened or frustrated. Older hyenas tend to laugh with more consistency than the varied sounds made by younger hyenas.
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