本周是学校的“爱护野生动物周”。请你根据下面的材料，为班级板报写一个关于狮子的80词左右的简要介绍。
Appearance: big and strong; grey or yellow fur; sharp teeth
Ability: good at hunting
Lifestyle: live on grassland; don’t often move around; meat-eating animals
Danger: people hunt them for fun and change grassland into grazing land (牧场)