The flehmen response (/ˈfleɪmən/; ), also called the flehmen position, flehmen reaction, flehming, or flehmening (from German flehmen), is a particular type of curling of the upper lip in ungulates, felids, and many other mammals, which facilitates the transfer of pheromones and other scents into the vomeronasal organ, also called the Jacobson's organ.
Read more about Flehmen Response: Exhibition, Physiology, Animals Exhibiting This Behavior, Purpose of Flehmen Behavior, Chemical Cues, Similar Responses
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“There is ... but one response possible from us: Force, Force to the uttermost, Force without stint or limit, the righteous and triumphant Force which shall make Right the law of the world and cast every selfish dominion down in the dust.”
—Woodrow Wilson (1856–1924)