![Two male Mountain Gorilla (Gorilla beringei) facing up and chest-beating in a dominance / hierarchy behaviour. Rwanda, Africa Stock Photo - Alamy Two male Mountain Gorilla (Gorilla beringei) facing up and chest-beating in a dominance / hierarchy behaviour. Rwanda, Africa Stock Photo - Alamy](https://c8.alamy.com/comp/E460N5/two-male-mountain-gorilla-gorilla-beringei-facing-up-and-chest-beating-E460N5.jpg)
Two male Mountain Gorilla (Gorilla beringei) facing up and chest-beating in a dominance / hierarchy behaviour. Rwanda, Africa Stock Photo - Alamy
![Why do gorillas beat their chests? New research gives insight into behaviour of silverbacks | UK News | Sky News Why do gorillas beat their chests? New research gives insight into behaviour of silverbacks | UK News | Sky News](https://e3.365dm.com/21/04/2048x1152/skynews-silverback-gorilla_5334742.jpg)
Why do gorillas beat their chests? New research gives insight into behaviour of silverbacks | UK News | Sky News
![Brian Lilly on Twitter: "Western Lowland Gorilla 'Kiondo' chest beating with four carrots in his mouth @PaigntonZoo #gorilla https://t.co/6rrK759pm7" / Twitter Brian Lilly on Twitter: "Western Lowland Gorilla 'Kiondo' chest beating with four carrots in his mouth @PaigntonZoo #gorilla https://t.co/6rrK759pm7" / Twitter](https://pbs.twimg.com/media/Dw-FKf9WwAUVJlv.jpg)
Brian Lilly on Twitter: "Western Lowland Gorilla 'Kiondo' chest beating with four carrots in his mouth @PaigntonZoo #gorilla https://t.co/6rrK759pm7" / Twitter
![Eastern Lowland Gorilla, gorilla gorilla graueri, Baby Displaying by beating Chest Stock Photo - Alamy Eastern Lowland Gorilla, gorilla gorilla graueri, Baby Displaying by beating Chest Stock Photo - Alamy](https://c8.alamy.com/comp/2DE5FD3/eastern-lowland-gorilla-gorilla-gorilla-graueri-baby-displaying-by-beating-chest-2DE5FD3.jpg)
Eastern Lowland Gorilla, gorilla gorilla graueri, Baby Displaying by beating Chest Stock Photo - Alamy
![Gorillas don't bluff when they chest beat: honest signalling indicates body size | Max-Planck-Gesellschaft Gorillas don't bluff when they chest beat: honest signalling indicates body size | Max-Planck-Gesellschaft](https://www.mpg.de/16679552/original-1617795150.jpg)