Vilkacis

Basics Latvian culture, along with Lithuanian, is among the oldest surviving Indo-European culture. Much of its symbolism (for example, the "fire cross" or swastika) is ancient. Its seasons, festivals, and numerous deities reflect the essential agrarian nature of Latvian tribal life. These seasons and festivals are still noted, if not also celebrated today—for example, Jāņi is a national holiday.
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[Latvian] Vilkacis (to be translated literally as "wolf's eyes"; 'werewolf') is usually a malicious creature; a scary being people can turn into. There are particular ways how the people with this curse turn into the wolves and then get their human appearance back. There are particular places, where this is said to have happened. Although mostly malevolent, on occasion it would bring treasures. It belongs to the same lower level of mythological beings as Dievini, Ragana, Pukis and Vadatajs. It is not clear whether Vilkacis it is human flesh or just the soul that transforms, as their are accounts of moving an apparently asleep person whose soul is out "running as a werewolf", after what the person turns out to be dead, as the soul couldn't enter the flesh to return.