After spotting these animals, vervet monkeys will vocalize a “chutter” alarm call that notifies their kin (-5[1])to stand erect and “look down.” In a form of “vigilance,” California ground squirrels often perform energetic side-to-side “tail flags” when harassing these animals. A species of these animals gained the ability to prey on rough-skinned newts after evolving sodium channels resistant to tetro·do·toxin. In a classic example of (*) Emsleyan mimicry, a species of these animals from the Micrurus genus evolved to resemble a less harmful counterpart by adopting a tricolor ring pattern. Members of the crotaline family of these reptiles possess pit organs near their nostrils that they use to sense infrared light. For 10 points, name this reptilian suborder that includes kraits and vipers. ■END■ (10[1])