The flehmen response also called the flehmen position, flehmen reaction, flehming, or flehmening, is a behaviour whereby an animal curls back its upper lips exposing its front teeth, inhales with the nostrils usually closed and then often holds this position for several seconds. It may be performed over a site or substance of particular interest to the animal (e.g. urine or faeces) or may be performed with the neck stretched and the head held high in the air. The behaviour facilitates the transfer of pheromones and other scents into the vomeronasal organ located above the roof of the mouth via a duct which exits just behind the front teeth of the animal. (Source Wikipedia)
King Notch II is seen displaying the flehmen response with his Queen in Maasai Mara in a slight drizzle.
Model Canon EOS 5D Mark III
Lens EF200-400mm f/4L IS USM EXT +1.4x III
Focal Length 784mm
Shutter Speed 1/800
Taken At Wed, Sep 17, 2014 2:40 PM