FusionDex

Kofflax eat large quantities of food, resulting in their bodies producing plenty of gas. They have begun to learn to propel themselves by releasing this gas, which tends to smell so horrible it can knock down even an Onix with a single whiff.

It wolfs down its weight in food once a day, swallowing food whole with almost no chewing. Getting up close to a Kofflax will give you a chance to observe, through its thin skin, the toxic gases swirling inside.