White horse (mythology) Poseidon was also the creator of horses, creating them out of the breaking waves when challenged to make a beautiful land animal. In Norse mythology, Odin's eight-legged horse Sleipnir, "the best horse among gods and men", is described as grey. Sleipnir is also the ancestor of another grey horse, Grani, who is owned by the hero Sigurd. In Slavic mythology, the war and fertility deity Svantovit owned an oracular white horse; the historian Saxo Grammaticus, in descriptions similar to those of Tacitus centuries before, says the priests divined the future by leading the white stallion between a series of fences
Sleipnir heavens or the underworld, a shaman "is usually represented as riding on some bird or animal." Davidson says that while the creature may vary, the horse is fairly common "in the lands where horses are in general use, and Sleipnir's ability to bear the god through the air is typical of the shaman's steed" and cites an example from a study of shamanism by Mircea Eliade of an eight-legged foal from a story of a Buryat shaman. Davidson says that while attempts have been made to connect Sleipnir with hobby horses and steeds with more than four feet that appear