Dog Indo-European mythologies and may originate from Proto-Indo-European religion. In Greek mythology, Cerberus is a three-headed watchdog who guards the gates of Hades. In Norse mythology, a bloody, four-eyed dog called Garmr guards Helheim. In Persian mythology, two four-eyed dogs guard the Chinvat Bridge. In Welsh mythology, Annwn is guarded by Cŵn Annwn. In Hindu mythology, Yama, the god of death, owns two watch dogs who have four eyes. They are said to watch over the gates of Naraka. The hunter god Muthappan from North Malabar region of Kerala has a hunting dog as his mount. Dogs are found in and
Dragons in Greek mythology Dragons in Greek mythology Dragons play a significant role in Greek mythology. The word dragon derives from the Greek δράκων (drakōn) and its Latin cognate draco. Ancient Greeks applied the term to large, constricting snakes. Daniel Ogden speaks of three ways to explain the origins of Greek dragon myths: as "vertical" evolution from (reconstructed) Proto-Indo-European mythology, as "horizontal" adaptation from Ancient Near Eastern mythology, or as sitting within "the cloud of international folktale". Regarding theories of vertical transmission, Ogden argues that they carry "an unspoken assumption that prior to such a transfer the Greeks' own myth-world was a "tabula rasa"",