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I'm Anthony for Discovery News and this is a puppy yawning for your enjoyment.
我是dNews的安东尼，给大家欣赏一个小狗打哈欠的视频。
That's adorable.
也太可爱了叭~
But it's also full of science.
但这个视频其实还有满满的科学知识在里面噢。
Yeah, that videos from a study performed by Luna University in Sweden to test emotional empathy and dogs.
你没听错，这是瑞典卢纳大学某研究的视频，该研究的研究目的是测试同理心和狗。
So, you see how that dog is yawning right after that human?
看到那只狗是在跟着那个人打哈欠了吗？
You've probably done that too.
你可能也这么做过。
Contagious yawning is pretty common in humans, but it's not widely seen in the animal kingdom.
传染性哈欠在人类中是很常见，在动物世界却并不常见。
And that's because it takes a certain amount of emotional empathy for the reaction to occur.
这是因为得有一定程度的情感共鸣才会出现这种反应。
For instance, it doesn't happen in human babies,
打个比方，婴儿就不存在这种情况，
because they haven't learned enough to be understanding of other people's feelings.
因为他们还没有足够的知识去理解他人的感受。
They don't see you yawn and know that you're tired.
他们不会看到你打哈欠就觉得你是累了。
The scientists in Sweden they're trying to see if that was also true of dogs.
瑞典的科学家，他们想知道狗狗是否也会这样。
So they grabbed 45 dogs, aged between 4 and 14 months, and yawned in front of them to see how they reacted.
于是，他们抓了45只4~14个月大的狗狗，在它们面前打呵欠，看它们的反应。
Now, none of the younger puppies yawned, only the ones that are over 7 months old.
最后，年龄小一点的狗狗一个也没打哈欠，只有满7个月的才会。
And that's pretty interesting, because contagious yawning only happens in children after they hit 4 years old,
这就很有意思了，因为人类只有在4岁以后才会出现传染性哈欠这种情况，
which is about the same place in the developmental cycle for humans as seven months is for dogs.
而在人类的发育周期中，这一年龄差不多和7个月大的狗狗是相对应的。
And scientists think that this means that learning empathy is actually part of our physical development cycle.
科学家们认为，这意味着学习同理心实际上是我们身体发育周期的一部分。
So, does that mean that emotional sensitivity is something that's hardwired into us?
那么，这是否意味着情感细腻是我们与生俱来的呢？
And what other animal emotions are closer to ours than we think?
有什么动物情感与我们人类的情感比我们想象的更详尽呢？
Deep questions, but I'm going to avoid answering them, and just watch these puppies yawn again.
这些问题都挺深奥的，但我不会回答，我只会看这些小狗子打哈欠。
Because it's adorable.
因为它们实在是太可爱了。
Look at him.
你看看它。
Anyway, watch that bit on loop for a couple hours and we'll be back with another dNews update.
反正，反复看个两三个小时，我们的dNews就又更新了。
