The author surveys mythical beasts and folkloric wonders found in historical natural histories, heraldry, travellers’ tales, and medieval bestiaries, tracing descriptions of unicorns, dragons, griffins, phoenixes, centaurs, mermaids, fairies, giants, sea‑serpents, vegetable lambs, and other marvels. He juxtaposes literary and popular accounts, considers symbolic uses in heraldry and saints’ legends, and examines how real animal observations, misread fossils, and herbal lore contributed to fanciful creatures. The book collects examples, sources, and anecdotes to illustrate how traditional belief and learned authority shaped enduring mythic images.