| http://www.w3.org/ns/prov#value | - Various hypotheses have been put forward to account for the transfer of chemicals from the tongue to the vomeronasal organ, which must occur very quickly; however, the mechanism remains unknown.In male ungulates, cats, elephants, bats, and some other mammals, access to the vomeronasal organ may be facilitated by curling the lips and exposing the upper teeth, with the nostrils closed.
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