Bestiaries were called zoological reference books of the Middle Ages . They included both animals known and legendary, or invented by travelers .. The famous writer Kir Bulychev set a goal to create a bestiary, which includes only fictional animals, from the monsters of Ancient Greece to the fabulous creatures of our days. In order to gather such a strange company, the author turned to fairy tales, myths, fantasies of different countries of the world. Therefore, in the bestiary there was a place for Japanese watermen, Chinese werewolves, Russian housewives and lice, Norwegian trolls and even Tianitolkaya, which was invented by Kornei Chukovsky ..