Teacher:Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
Teacher: Now, understand the problem? Solve this instance: Exemplified by baring teeth, aggressive type of displays are common in the animal kingdom, and sometimes serve as a 'bluff'.
Student:
Exemplified by baring teeth, what type of displays are common in the animal kingdom, and sometimes serve as a 'bluff'?