Mysterious legends or reality? The answer to this question is trying to find a cryptozoology, which, though considered pseudoscientific department, but has millions of supporters worldwide. Its foundations laid Belgian Bernard Heuvelmans, when in 1955 the Paris work Sur la Piste des Bêtes Ignorées (On the trail of unknown animals). As a paleontologist who examines the remains of extinct creatures kyrptozoológia be addressed by Heuvelmans real existing beings living in secret from the eyes of humans (from the Greek “Kryptos” – hidden). What are these mysterious creatures, what we know about them and where do we meet?