Researchers say the bones of dogs and wolves at the Bronze Age site of Krasnosamarskoe in Russia's Volga region reveal a rite of animal sacrifice. Archaeologists from Hartwick College in Oneonta, N.Y., speculate that young boys were initiated as warriors by killing the dogs, who had most likely been their pets for years. The sacrifice would make sense, said researcher Dorcas Brown, because "you have to train people to kill."

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