It's now without doubt that dogs are domesticated wolves,
毫无疑问的 狗就是被驯养了的狼
But how and when did it happen?
可这是怎么发生的 何时发生的呢
Again, the archaeological record is inconclusive.
重申一次 考古学的记录不是决定性的
What is clearly a dog?
怎样才算是一条真正的狗
Clearly, a dog is something which is clearly not a wolf.
很明显 狗和狼有区别的
Well, here's a wolf skull and as you can see it's a long,
这是只狼的头骨 它的头骨
quite low skull with a relatively flat top.
狭长 低浅且顶部相对平坦
The teeth are quite large and the thing is quite narrow.
比起家狗这些牙齿更加的显得
Compare that with a domestic dog.
巨大和狭长
This is a cairn terrier and as you can see,
正如你所见 这是一种小猎狗的头骨
The process of domestication has gone really quite a long way.
狗的驯化历史非常悠久
The whole face is very much shorter,
整个脸部显得更加短小了
it's been contracted towards the brain case.
它向头盖骨的方向收缩
The brain case itself has a much steeper front
头盖骨就变得非常的陡峭
and a much more bowed upper surface.
形成一个弓形的上表面
So if you found that, you would be
因此当你察觉到了这些
in no doubt you were dealing with a domestic dog.
毫无无疑 你面对的是条家狗
But this is a domestic alsatian and
这是只驯养的阿尔萨斯牧羊犬
telling these apart really would be substantially difficult.
分辨这些就会变得非常困难
And since early dogs were probably very wolf-like,
自古以来 狗就与狼非常的相似
it's hard to pinpoint when domestication happened
从骨头的形状来分析 精确的找出
by looking at the shape of the bones.
驯化发生的时间点是很困难的一件事情