* Sebacious glands that secrete a [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheromones|pheromone]] used for scent marking. | * Sebacious glands that secrete a [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheromones|pheromone]] used for scent marking. |