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狗狗真的会冲我们笑吗？
source link: https://tech.sina.com.cn/d/a/2019-06-10/doc-ihvhiqay4565824.shtml
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新浪科技讯北京时间6月10日消息，据国外媒体报道，你也许看到过狗狗对你“笑”的样子：嘴巴张开，嘴唇向后咧着，舌头伸在外面，看上去的确是个灿烂的笑容。但事实真的是这样吗？狗也会像人类一样、用这个表情表达自己的快乐和满足吗？换句话说，狗狗真的会
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