Many of the dogs have become unsung heroes of missions in Mexico and abroad, and their training starts early in life, about a month after birth, and it's all taught as a game.
In the middle of a military base outside Mexico City, an army colonel runs what he calls a kindergarten for dogs. Puppies that one day will become rescue dogs, or sniffer dogs for drugs or explosiv…
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Puppy kindergarten: Mexico's rescue dogs trained by playing | Since Then
