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A flehmen behaviour in a horse. Comportement d'un cheval lors du flehmen.
A horse's grimace at the time of a flehmen. In horses, flehmen involves curling the upper lip back and extending the neck; it is believed to enhance the sense of smell at the rutting season by stimulation of the vomero-nasal organ (or Jacobson organ) located on the roof of the mouth. Grimace d' un cheval lors d'un flehmen. A la saison du rut, ce terme désigne l'attitude du cheval qui analyse une odeur inconnue alors qu'elle vient stimuler son organe voméro-nasal (ou organe de Jacobson) situé sur la voûte du palais.
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Photo credit: © Emmanuel LATTES / Alamy / Afripics
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