第 79 期： Explorer: Science of Dogs
In this segment, bomb sniffing dogs are trained to smell the chemical components found in explosives.
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Training starts early.
The first thing puppy should know at this age is the__1__. As they get older, they’re introduced to chemical components used in bomb-making. The dogs are rewarded each time they get it right. Eventually they will be able to detect twelve different chemical components found in explosives. All are odorless to humans.
As soon as they walk in the door of Moscow’s Sheremetyevo Airport, the Sulimov dogs start their day job as indefatigable___2__. They have no boundaries, leaping up wherever they can, taking in the smells, __3__ when one is found.
We teach the dog the following signals. First she sits, then she barks, and the last signal is for the dog to show where the smell comes from.
Unlike German shepherds which are commonly used as bomb-sniffing dogs throughout the world. The Sulimov ___4___ searches without prompting, continuously.
The German shepherd will never take its own initiative. The hybrid is never like this because it’s more independent and takes its own initiative. It has its own idea as where to go and what to smell.
And today is no different, except on a routine sweep, the dog finds something, and as rehearsed alerts the trainer. A second dog confirms the discovery. Officials start clearing the area as bewildered passengers look on. After several tense minutes, we learn that this is just a drill. No one, not even the trainer knows when and where a planted item will be. Incredibly, inside this inconspicuous bag were ___5___of explosive chemical component, amounts so slight they were smaller than a grain of sand, and found by this dog. These dogs’ senses of smell are so acute they can sniff through things like luggage, a sort of x-ray vision, only better. It’s a man-made machine that doesn’t break down.
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