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Английский языкАвтор:
jude825Sniffer dogs are trained in two stages. First, the dog is trained to recognize a particular drug or explosive. A sample of the drug or explosive is hidden inside a rolled-up newspaper or a rag, which is called a training aid. Next, this aid is placed where it can be seen by the dog. Then the dog is told to bring the aid back. When it does so, the dog is given a reward – usually a friendly fight with a trainer or a bone.
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