The explanation of the origin of the belief in werewolves must be one which will apply the world over, as the werewolf superstition is found pretty much all over the earth,[9] especially to-day[10] however in Northwest Germany and Slavic lands; namely, in the lands where the wolf is most common.[11][12] According to Mogk[13] the superstition prevails to-day especially in the north and east of Germany.[14] [9] See also Mogk in Paul’s Grundriss, III. 272. Dr. Rud. Leubuscher, Über die Wehrwölfe und Thierverwandlungen im Mittelalter, Berlin, 1850, mentions cases in ancient Arcadia, in Arabia, Abyssinia (hyenas), and the almost epidemic disease in the Middle Ages. Dr. W. Hertz, Der Werwolf, Stuttgart, 1862, ascribes the superstition to Armenia, Egypt, Abyssinia (hyenas), Greece (pages 20-28), but not to India, contrary to Encyc. Brit. below; on p. 133 he says: “Tierverwandlungen sind allgemein menschlich, finden wir überall. Die eigentümliche Entwicklung der Werwolfsagen aber finden wir vorzugsweise bei einer bestimmten Völkergruppe, den arischen Stämmen der Griechen, Römer, Kelten, Germanen und Slaven; bei den südwärts gezogenen Stämmen der Inder und Iranier sind uns gleiche Sagen nicht begegnet [but see below]. Am massenhaftesten treten die Werwölfe bei den Slaven auf, und ihnen gehört die älteste historische Erwähnung der Sage; viel älter aber ist der Lykaon Mythus und arkadische Werwölfe”. According to Andree, Ethnographische Parallelen und Vergleiche, Stuttgart, 1878, ss. 62-80, the superstition is found in every European country (amongst Anglo-Saxons, English, French, Bretons, Poles, Tschechs, Lithuanians, White Russians of Poland, inhabitants of island Oesel, Russians, Italians, Portuguese, Provencal peoples, Greeks, Kelts, in Asia, Africa, America; but not in India nor Persia, contrary to Encyc. Brit. below), especially though in northwestern Germany and in Slavic lands. As to the American Indians, see Ethnological Report for 1880-81, p. 83, “From their close relations with wild animals Indians’ stories of transformations into beasts and beasts into men are numerous and interesting.... In times of peace, during the long winter evenings, some famous storyteller told of those days in the past when men and animals could transform themselves at will and hold converse with one another.” Jacob Grimm, Teutonic Mythology, Bell & Sons, 1883, II. 668 says no metamorphosis occurs more frequently in Germanic antiquities than that of men into werewolves. Thus Fenrisûlfr, a son of Loki, makes his appearance in wolf’s shape among the gods.