(Amon, from Collin de Plancy's Dictionnaire Infernal: Paris, 1863)
Drawing upon a manuscript copy of the Goetia, Reginald Scot records about this demon: "Amon or Aamon, is a great and mightie marques, and commeth abroad in the likenes of a woolfe, having a serpents taile, spetting out and breathing flames of fier; when he putteth on the shape of a man, he sheweth out dogs teeth, and a great head like to a mightie raven; he is the strongest prince of all other, and understandeth of all things past and to come, he procureth favor, and reconcileth both freends and foes, and ruleth fourtie legions of divils."
Collin de Plancy took the artistic liberty of compressing Amon's two forms into one. He should have been represented as either a fire-breathing wolf with a snake for a tail, or as a man with a raven's head that had doglike teeth in its beak.
Demons often appear in two primary forms, the first of which is wilder and more frightening, but the second, human with only a few bestial traits. It is up to the magician to command the evoked demon to put on its human guise so that communication with it can be made more easily, and with less risk of injury. You can see this dual appearance of demons in the two images of the demon Camio.