African Male Lion
African Male Lion.
When a large male lion sniffs the ground, lifts his head high and bears his teeth upon finding a site of interest, perhaps the dung of a rival or urine of a potential mating partner, he would expose his front teeth, breathe in with the nostrils closed, and typically lift his head high in to the air.
The behaviour facilitates the transfer of pheromones and other scents into the vomeroasal organ located above the roof of the mouth via a duct just behind the front teeth. The vomeronasal organ, or the Jacobson’s organ, is an auxiliary olfactory sense organ that is found in many animals. This organ is typically used to detect pheromones that carry information between animals.