We are always using body language in our daily communication. When we talk each other, we may use body language. For example, in the US, people point to their (head) when they think someone is clever. However, human beings(人类) are not the ones who use body language.(animal) also use body language and facial expressions(面部表情) to tell each other they feel and what they think. A dog will raise its ears and (open) its eyes when it's happy; (show) friendship, elephants will touch each other with their trunks(象鼻); angry dolphin will sometimes slap(拍) (it) tail on the water, and when it's happy, it'll play with friends, or (make) small jumps into the air. So animals also"say" things to each other in a different way.
