In Norse mythology, Sköll was a wolf that chased the sun (Sol) through the sky every day, trying to eat her. Sköll has a brother, Hati, who chases the moon. Both are supposedly brothers/sons of Fenrir. At Ragnarok, both Sköll and Hati will succeed in their quests.
Creatures in Norse mythology | Mythological dogs
Skoll | Skalli | Skoll | Skolls | スコル | Skoll | Skoll | Skoll | Сколь