Too wild and noble to be tamed by anyone but Gandalf, Shadowfax is the silver-gray Lord of all Horses who hearkens back to the great Mearas horses of past ages. Gandalf takes Shadowfax from Rohan’s pastures so that he can swiftly bear the wizard to the Shire to aid Frodo.
Shadowfax Character Timeline in The Fellowship of the Ring
The timeline below shows where the character Shadowfax appears in The Fellowship of the Ring. The colored dots and icons indicate which themes are associated with that appearance.
Book 2, Chapter 2
...the Great Eagle, who carried him to the nearby country of Rohan. There, Gandalf tamed Shadowfax, the swiftest of all horses and reminiscent of the mearas of old. Shadowfax carried the... (full context)