Direwolf Whistle

Direwolf Whistle is an other item. When used, it awards the Direwolf mount.

Source
Direwolf Whistles can be purchased, with Sworn reputation, for from the following vendors:
 * Ixali Vendor - North Shroud

Direwolf Whistles can also be obtained during the Moogle Treasure Trove event by exchanging 30 with the following vendors:
 * Itinerant Moogle