* Some [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheramones|pheromones]] are less volatile and need to be detected by the '''vomeronasal organ'''. | * Some [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheramones|pheromones]] are less volatile and need to be detected by the '''vomeronasal organ'''. |