My boss just got back from his Arizona vacation, staying on an Indian reservation for quick access to Indian-owned casinos.
His hotel room included, free of charge, a large buzzing sound that he initially mistook for crickets. Eventually he realized it was the sound of rattlesnakes, apparently just outside his patio door but so loud as to make him think they were under the bed. He lay, paralyzed, lest they come up and bite him during the night.
He was told they come out at night. Sounds like he'll stick to Vegas next time.