Thanks to their poisonous nature the humble toad is steeped in myth and folklore, with a strong link to the occult, witchcraft, and the devil, particularly in Europe. Toads are a common ingredient in witch’s potions and folk medicine, and a popular choice as a familiar (animal servant). Indeed, in Shakespeare’s MacBeth one of the three witches has a toad familiar named Paddock and a toad is also used in one of the witch’s potions…
Round about the cauldron go;In the poison’d entrails throw.