"We can rule out that the dogs simply distinguish between the pictures based on a simple cue, such as the sight of teeth," said study author Corsin Muller.
研究作者科辛·穆勒说：“我们可以排除狗只是根据简单的线索来区分图片，比如看到牙齿。”
Fractured teeth are not uncommon in dogs and cats and are usually the direct result of fight or automobile accidents.
牙齿折断在狗和猫中也不少见，通常是咬斗和汽车事故的直接结果。
Not recommended for mail men, circus performers, hikers and owners of dogs with large teeth.
这对那些邮递员、马戏团演员、徒步旅行者和有大牙齿狗的主人不推荐。
Cleanliness of teeth requires a bit of attention - either give your dogs regular hard bones to chew or remove the plaque build up manually.
清洁牙齿的时候需要注意—要么有规律的给犬只硬骨头咀嚼，要么要手动去除齿斑菌。
Objective To study the expression and significance of Vascular Endothelial Growth Factor(VEGF) in the development of dogs permanent teeth germs.
目的：探讨犬乳恒牙替换过程中血管内皮生长因子（VEGF）在犬恒牙胚发育中的表达及意义。
Some Dogs found the skin of a Lion and furiously began to tear it with their teeth. A Fox chanced to see them and laughed scornfully.
一天有一群狗找到了一张狮子的皮毛，于是开始用牙狠狠地撕扯它。有一只狐狸碰巧看见了，就轻蔑地笑了。
Also, dogs who chew on tennis balls can wear down their teeth on the tough outer fuzz.
并且狗在咬球的时候球身上的毛会磨损它的牙齿。
The Scheeles are particularly devoted pet owners. They feed their dogs human food, brush the dogs' teeth and dress them in raincoats when it's wet outside.
撤尔夫妇是一对十分深爱宠物的养主，他们用人类吃的食物喂养狗，帮它刷牙，遇到外面下雨就帮狗穿上雨衣。
Suddenly facing so many dogs at the same time, Lonely was startled. He shrank back instinctively, showed his teeth, and howled in a threatening low voice.
看到这么多狗突然同时出现，这只孤僻狗大吃一惊，它本能地退缩了一下，龇牙咧嘴，发出阵阵低沉的吼声。
If two dogs bark, show their teeth, jump at each other, that is just a show, they are trying to feel the pulse, who is the stronger.
如果两只狗对着叫，龇牙咧嘴，互相颠扑，那只是一种表现，它们在试图摸底，谁更强大。
If two dogs bark, show their teeth, jump at each other, that is just a show, they are trying to feel the pulse, who is the stronger.
如果两只狗对着叫，龇牙咧嘴，互相颠扑，那只是一种表现，它们在试图摸底，谁更强大。
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