英语动物谜语,要 They are...They have...They can...They like eat...What are they?

朋友,我任务,
They are tall,他们很高.
They have a very long neck and legs 他们有一个长长的脖子和腿.
They can run fast.他们跑得很快.
They like eat leaves on top of the tree and What are they?他们喜欢吃书上的叶子.他们是什么?
key:长颈鹿/giraffe