Eavesdropping between species is an extraordinarily broad topic because of the fact that there are so many species of animals that use this evolutionary adaptation in multiple different ways. In the article Vigilance against predators induced by eavesdropping on heterospecific alarm calls in a non-vocal lizard Oplurus cuvieri cuvieri (Reptilia: Iguania), is a study on how lizards respond and differentiate between predator calls and songs of birds. Here, we experimentally test whether O. c. cuvieri eavesdrops on heterospecific alarm calls. Specifically, we examine whether iguanas distinguish the mobbing alarm calls of the Madagascar paradise flycatchers that were emitted in response to nearby predators from their songs (Ito & Mori). The hypothesis
