* Some [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology|pheramones]] are less volatile and need to be detected by the '''vomeronasal organ'''.
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* Some [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheramones|pheramones]] are less volatile and need to be detected by the '''vomeronasal organ'''.
** Bull,ram,stallion,some extent the boar.
** Bull,ram,stallion,some extent the boar.
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* Male closely approaches the source of [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology|pheramones]] and will nuzzle the female genital region.
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* Male closely approaches the source of [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheramones|pheramones]] and will nuzzle the female genital region.