Perhaps unsurprisingly, there hasn’t been a great deal of research on the smell of wet dogs, but a pilot study was carried out several years ago to compare the differences between compounds emitted from the hair of dry dogs and that of wet dogs. The study identified a number of compounds whose concentrations were observed to increase when dog hair was wet; these encompassed a whole range of independent odours, from ‘sulfurous’, to ‘medicinal’, to fruity, and ‘earthy’. They also found that the concentration of some compounds increased more drastically than others.