In Norse mythology, what eight-legged horse is ridden by Odin?

In Norse mythology, Sleipnir is the eight-legged horse ridden by Odin.

Sleipnir is described in both the Poetic Edda and Snorri Sturluson’s Prose Edda as Odin’s mount and the finest of all horses. The name is commonly connected with Old Norse words meaning “slippery” or “the slipper,” suggesting extraordinary speed or movement.

His unusual birth is one of mythology’s strangest episodes. Loki transformed himself into a mare and distracted the stallion Svaðilfari, a powerful horse helping a giant builder construct Asgard’s defenses. Loki later gave birth to a gray, eight-legged foal: Sleipnir.

Sleipnir could travel across land, sea, and sky, and Odin rode him on journeys connected with the realm of the dead. The eight legs are sometimes interpreted as a symbol of speed, supernatural travel, or a shamanic steed. Sleipnir is often confused with Pegasus, but Pegasus belongs to Greek mythology and has wings rather than eight legs.