Nineteen German Shepherds were being transported to a training facility last month when they became overheated in a box truck in Lake Station, Indiana. Ten of them died.
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Police said the driver, who picked the dogs up from a flight at O'Hare Airport and was bound for a training facility in Michigan, was unaware that the air conditioning in the cargo area of the truck had failed in the sweltering heat.
On Thursday, PETA called the investigation "a step in the right direction."
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