Leave it: Dog trainers help pets avoid poisonous snakes
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In this undated photo shows Brian the rattlesnake, which is used to train dogs to avoid dangerous vipers, in Tucson, Ariz. (J.J. Belcher via AP)
In this undated photo shows Brian the rattlesnake, which is used to train dogs to avoid dangerous vipers, in Tucson, Ariz. (J.J. Belcher via AP)