crying

Its general question to all my viewer is man is the only animal who can cry?
if you said yes then my answer will be diffrent because i dont thing that man is the only animal who can cry because i have seen lot of animal who can cry. Even in discovery i have seen that animal were crying after a fight held between two.
one of my up coming friend has view is this
"Why we cry? It is said only human beings can cry. Are we the only animals which will fell sad? I don’t think so. But maybe other animals, they have better ways to let out their anger or sorrow. They could fight with each other, or they could shout out in the wild, and they could tear their quarry. None of these can we do. So the only way we have is, crying out. Let our tears down."
do you belive tears can solve the probleme or they can make thing worse? well i thought it depend up on the situation,place and the in front of whome you are crying.i agree with this statment which my friend said "I say maybe, if your teacher is kind enough, your tears may move her, and she may change your score, then you pass the exam. But don’t count on it. In most of similar occasions, tear can change nothing. Or they even make things worse"
have a nice day!!!!!