a French man of letters during the Age of Enlightenment and the author of one of the first books on animal behavior. Le Roy was a lieutenant of the royal hunt and a friend of the encyclopedists Denis Diderot, d'Alembert and d'Holbach, regularly attending d'Holbach's salon. Le Roy's publications began as texts on the behaviour and sensitivity of animals, published under the pseudonym of "the physician of Nuremberg." These appeared in the Encyclopédie méthodique in 1764.
