Generalization, the tendency to respond in similar ways in different situations, can be adaptive or maladaptive, depending on the context. For example, generalizing fear of a real threat to other similar dangerous contexts can be important for survival; conversely, displaying fear in safe environments is detrimental. The ventral hippocampus (VH) is in a key position to modulate valence and provide contextual information that allows for selective or generalized responses. Yet little is known about how this area modulates these behaviors.