Bernard Heuvelmans (October 10, 1916 – August 22, 2001) was a belgian-french scientist, explorer, researcher, and a writer best known as "the father of cryptozoology". His 1958 book, On the Track of Unknown Animals (originally published in French in 1955 as Sur la Piste des Bêtes Ignorées) is often regarded as one of the best and most influential cryptozoological works.