(New Latin, “belonging to the nose”) - the moist, naked surface around the nostrils of the nose in most mammals. In actual scientific usage it is typically called a “wet snout” or “wet nose” from its moist and shiny appearance. The groove in the centre of it, which reaches the mouth, is called the philtrum. Mammals with rhinaria tend to have more acute olfaction, i.e. a sharper sense of smell.