Topic：Describe a person or animal who looks fierce.

I used to like to watch the movie called Animal world.This movie tell the story the animals in the world.We can called it animal's documentary.I saw a scene that is a fearful and violent scene.Five tigers were bitting a yak. Although the tiger isn't nearly as big as a yak.However the five tigers joint work to attack the yak.Their violence become very powerful！They killed a yak much quickly.It was unbelieveble！The tiger who looks fierce.