We can fake our facial expressions, but in general: Smile = happy, grimace = angry. Even our companion animals have our number – dogs, for example, are very sensitive to the emotional cues we give. But what about other animals?
我們雖然可以偽裝自己的面部表情，但總的來說：微笑=開心，哭臉=生氣。甚至就連我們最親密的動物夥伴都能看透我們——比如狗狗，對我們的情感變化就非常敏感。那麼其他動物也有這種「超能力」嗎？
According to a 2018 study led by scientists at Queen Mary University of London, it appears evident that when it comes to goats at least, the answer is yes.
倫敦瑪麗皇后大學（Queen Mary University of London）的科學家2018年進行的一項研究表明，至少對山羊來說，是能讀懂人類情緒的。
Published in the journal Royal Society Open Science, the researchers explained how 20 goats reacted to images of happy and angry human facial expressions, concluding that the goats preferred to look at and interact with the positive faces.
此研究發表在《皇家學會開放科學》雜誌上，研究者們闡述了20隻山羊看到人類快樂和憤怒的面部表情的照片時做出的反應，得出的結論是：這些山羊更喜歡看人快樂的樣子，並與之互動。
The research was conducted at Buttercups Sanctuary for Goats in Kent, where the team showed the goats pairs of unfamiliar faces of the same person showing happy and angry expressions.
這項研究在英國肯特郡的Buttercups Sanctuary山羊場進行的，研究小組向山羊展示了幾組同一個人的高興和憤怒時的表情照片。
The goats preferred the happy faces, which elicited greater interaction with the goats approaching them and exploring them with their snouts. The effect was amplified when the happy faces were on the right side, suggesting that goats use the left hemisphere of their brains to process positive emotion.
結果發現，山羊更喜歡笑臉，笑臉能引起更多互動，山羊會走近照片，用鼻子嗅探。當照片上的笑臉出現在山羊右側時，吸引效果會增強，這表明山羊利用大腦左半球來處理積極情緒。