Butt beasts enter a feeding frenzy when feeding or hunting butt, this is similar to the feeding frenzy that sharks experience.
The only know enemy of the butt beast is an Alicia, the Alicia is a striped animal that also loves human butt. The Alica and the butt beast sometimes have territorial battles to the death.
Guy1- "I heard a fart noise, did you fart?"
Guy2- "no I did not fart"
Guy1- "oh no!"
Guy1- "run! a butt beast is following us!"