(A) Pyramica hoplites stalks other insects in the leaf litter like a miniature jaguar. "If your sister goes to the corner for a glass of milk and never comes back, it's Pyramica that got her," says Fisher. (B) Anochetus grandidieri, a trap-jaw ant, walks around with her mouth open until prey hits a trigger hair and sets off her spring-loaded mandibles. (C) A recently discovered species of Mystrium, yet to be named, feeds centipedes to its offspring, then sucks the youngsters' blood for a secondhand meal. (D) This yet-to-be named species of Pachycondyla is not just another face in the crowd; unlike most ants, some Pachycondyla species are capable of recognizing each other as individuals.