Without “wet nose”, that is, the layers of mucus on the dog's nose, Man's best friend's sense of smell would not be so perfect. There are several hundred times more olfactory cells in a dog's nose than in humans. But it is not only thanks to them that the dog has such a great ability to distinguish between smells. As shown by a recent study by Brent Neven's team at Pennsylvania State University, it plays an important role too… Qatar, actually the mucus covering the dog's nose. It filters the air inhaled by the dog. As a result, the chemical molecules in the air are captured by olfactory cells in a specific order. According to the researchers, this pre-selection of different scent molecules makes it easier for the relevant regions of the brain to recognize individual scents.
