Were-wolf

I must say they were not cheering to me, for amongst them were “Ordog”—Satan, “pokol”—hell, “stregoica”—witch, “vrolok” and “vlkoslak”—both of which mean the same thing, one being Slovak and the other Servian for something that is either were-wolf or vampire.

Source: wiktionary

For its part, the vivid imagery of Servian folklore states that 'the power to become a were-wolf is obtained by drinking the water which settles in a foot-print left in the clay by a wolf.'

Source: wiktionary

This fancy Herodotus regards with incredulity, but his mention of it is none the less valuable, for the were-wolf is a figure which constantly appears in modern folk-lore.

Source: wiktionary

If traditions of were-wolves are scanty in England, it is quite the reverse if we cross the water.

Source: wiktionary