flehmen

1. (especially in the compound "flehmen response") Flaring of the lip in mammals, associated with intensive smelling; flehming.Examples: "During the preliminary phase of courtship between captive animals, Matthew Gaughwin observed flehmen on a number of occasions when the male sniffed intensely at areas of ground where the female had previously urinated and once when the male had sniffed the female's cloacal region."; "Ladewig and Hart showed that when a male goat displayed flehmen after investigating female urine containing a tracer material, the urine was found throughout the vomeronasal organ."; "Behaviors recorded included sniffing, flehmen, blowing, avoidance, and penile erections."countableespeciallyuncountable