Brian Lilly on Twitter: "Western Lowland Gorilla 'Kiondo' chest beating with four carrots in his mouth @PaigntonZoo #gorilla https://t.co/6rrK759pm7" / Twitter
Why do Gorillas Beat Their Chest? 4 Reasons | Storyteller Travel
Chest Beating Gorilla" Greeting Card for Sale by rawshutterbug | Redbubble
Gorillas beat their chests to size each other up, researchers say | Animal behaviour | The Guardian
Why do male gorillas beat their chests? New study offers intriguing evidence | National Geographic
Gorillas' chest thumping allows females, rivals know their size without seeing them- Technology News, Firstpost