The Courier-Mail



WHY do gorillas beat their chests? A team of European scientists say the gorilla’s aggressive display is intended to show off the size of their body via an audio signal that rivals can hear a kilometre away.

The bigger the gorilla, the deeper the sound, the University of Barcelona researcher­s wrote in the study.

“Conducting this study was challengin­g because the chest beats are relatively short in duration, and we needed to be in the right place at the right time to obtain the sound recordings, as well as staying clear from these large powerful animals,” research assistant Eric Ndayishimi­ye said.

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