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== Flehmen Response ==
== Flehmen Response ==
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* Some pheramones
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* Some pheramones are less volatile and need to be detected by the '''vomeronasal organ'''.
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** Bull,ram,stallion,some extent the boar.
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* Male closely approaches the source of pheramones and will nuzzle the female genital region.
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* Vomeronasal organ is an '''accessory olfactory''' organ.
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* Connected to two small openings in the anterior roof of the mouth just behind the upper lip.
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* Fluid-borne,less volatile chemicals enter the vomeronasal organ through the oral cavity by means of nasopalatine (incisive) ducts.
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