Leave it: Dog trainers help pets avoid poisonous snakes

TUCSON, Ariz. (AP) — Ripley, a medium-sized dog with a strong prey drive, curiously approached Brian, a large western diamondback rattlesnake, until she got a quick zap on the neck meant to simulate a venomous viper’s bite. Suddenly, the 2-year-old blue heeler mix wanted nothing to do with Brian’s...

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