Obese or Something BIGGER?
Contrary to popular belief. The huge tummy of the Proboscis Monkeys are not filled with fat but rather with bacteria that help digest leaves, removing poisons and other harmful chemicals.
The bacteria are so effective that Leaf monkeys such as the Proboscis do not feed on sweet fruit. Doing so would cause the bacteria to ferment them so rapidly it would produce a huge amount of gas and acid, causing discomfort or even death!
![Big Belly](https://blogs.ntu.edu.sg/hp331-2014-77/files/2014/11/img_3994.jpg)