Gorillas' chest thumping allows females, rivals know their size without seeing them- Technology News, Firstpost
Why do male gorillas beat their chests? New study offers intriguing evidence | National Geographic
Gorillas don't bluff when they chest beat: honest signalling indicates body size | Max-Planck-Gesellschaft
Gorillas beat their chests to size each other up, researchers say | Animal behaviour | The Guardian
Why do gorillas beat their chests? New research gives insight into behaviour of silverbacks | UK News | Sky News
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Gorillas beat their chests to size each other up, researchers say | Animal behaviour | The Guardian
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The shocking, real reason why gorillas pound their chests
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Gorillas Beat Their Chests to Communicate With Each Other | Smart News| Smithsonian Magazine
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Gorillas beat their chest to prove who is the bigger foe | BBC Science Focus Magazine
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WATCH: Gorilla Cracks Glass Enclosure in Response to Little Girl's 'Chest- Beating' : ScienceAlert
Terrifying moment huge raging gorilla charges tourists forcing them to flee as he beats his chest | The US Sun
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