The geometrical appearance and the limited number of mammalian fur patterns (such as zebra stripes) have attracted the attention of mathematicians who have assumed that simple algorithms could explain their implementation. The Englishman Alan Turing hypothesized that dress patterns could result from the action of two chemical agents, morphogens. Their interaction in the two-dimensional space of the animal's leather would cause the formation of the drawings according to a reaction-diffusion morphogenesis phenomenon. If one of the morphogens produces black and the other white, the differences in the diffusion rate of these two agents through the skin would determine the extension of each color. This founding work has paved the way for computer-based simulation exercises that draw patterns of dresses quite similar to those of nature.