If a rat had a lesioned (surgically removed) amygdala and was then placed in the same room with a cat, the rat would likely appear tame, neutral, perhaps even playful. The amygdala is a structure located in the temporal lobe that participates in the control of emotional and motivated behaviors. In the rat it is considered that two of the subdivisions of the amygdala, the medial amygdala (Am) and the posteromedial nucleus, belong to the vomeronasal system,