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But there's one sense she'll use more than any other. Her sense of smell.
但有一種感官她日后最常用到：她的嗅覺。
A dog's brain is one tenth the size of ours, but the part that controls smell is 40 times larger.
狗的大腦是人腦體積的十分之一，但控制嗅覺的那部分卻是人腦的四十倍。
They have up to 300 million scent glands in their nose compared to our five million.
它們的鼻子里有多達三億個氣味腺，而我們只有五百萬個。
So don't kid yourself, you can't hide a bone from your dog just because it's out of sight.
所以別騙自己，別以為將骨頭藏起來你的狗就找不到了。
A dog's nose is so sensitive, it can even smell events from the distant past.
狗的鼻子極為敏感，甚至能嗅出許久之前的事。
We're unravelling the secret world of dogs.
我們正在解密狗的世界。
Our puppy's four weeks old and she's busy exploring her home. But not like we would.
小狗四周大了，正忙著探索自己的家，但方式跟我們不同。
We look around with our eyes. She looks around with her nose.
我們用眼睛環顧四周，而她用的是鼻子。
It's why a healthy dog likes to keep its nose wet.
因此健康的狗喜歡讓鼻子保持濕潤。
This maximises the number of scent molecules it can observe from the air.
這能最大程度地從空氣中獲取氣味分子。
Their nose is their superpower.
鼻子就是它們的超能力。
It's so powerful, they can smell well into the distant past.
它們的嗅覺強大，甚至能嗅出許久之前的事。
When we watch a dog enter a new environment, it looks like they just walk in the same way we would.
當我們看著狗進入新的環境，它們步入的方式似與我們別無二致。
But when you see the world from their perspective, you realise they're picking up all the information theyneed with their noses.
但當你從它們的視角看世界時，你會發現它們是用鼻子來獲得一切所需信息的。
Not only can they smell objects that were there and have now been cleaned away... Their senses are so keen,they can smell events days, weeks, even months after they've happened.
它們不僅能嗅出原本存在，還有已被清理干凈的東西，它們的感官極為敏銳，可嗅出數日、數周甚至數月前發生的事。
So they'll know if there might just be a bit of food left behind that they could eat.
所以哪怕還有一丁點遺留下的食物，它們都能知曉。
This all comes naturally to a dog.
這都是狗與生俱來的特質。
But when you train this wet, snuffly food-finding ability, the results can save lives.
若多加訓練，這種用濕鼻子尋找食物的能力就能拯救生命。
Good boy. Go on!
好孩子，繼續。
The dogs are very, very efficient. They're probably equal to about ten people searching.
狗十分高效。一只狗大概相當于十個搜救人員。
Max is a wilderness air scenting dog and he's trained to pick up human scent so he can find missing peoplefor his handler Alex Lyons.
馬克斯是一只野外搜救犬，他被訓練來追蹤人類的氣味，以幫助主人阿列克斯·萊昂找到失蹤的人。
We all smell, whether we like it or not, and our scent gets carried in the wind and that's what he's trained to locate.
不管喜不喜歡，我們都有體味，我們的氣味隨風擴散，我們正是訓練他定位這種氣味。
He gets that excited, he can't bark properly, so he gives me a 'huff-huff' thing.
它很興奮，都沒法正常地吠叫了，所以就會發出這樣的聲音。
