Sköll
In Norse mythology, Sköll, or Skoll (Old Norse: Skǫll), is a wolf that, according to Snorri Sturluson's Prose Edda, chases the Sun (personified as a goddess, Sól) riding her chariot across the sky. Hati Hróðvitnisson chases the Moon (personified, as Máni) during the night.