Why do gorillas beat their chests?

In the zoo, you will see gorillas patting their chests back and forth with their hands. Wild gorillas often do this. What's going on here?

This is their habit. As long as you look closely, you will find that it is likely to do so when other animals are present, especially hostile animals. In addition, if the tourists in the zoo do something that is not pleasing to the eye, it will do the same thing, and it will come over with a grin and anger, so don't make the gorilla too angry in the zoo.

This behavior of gorillas is a demonstration action to show their strength to each other. When we humans show our strength, we are not patting our chests! The reason is exactly the same.

Among primates, chimpanzees also have this habit of patting their chests, but orangutans and gibbons have not found similar behavior. Only gorillas and chimpanzees are closer to us.

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