- Oct. 2, 2012, 11:14 p.m.
To answer your question, the Reins of the Grand Expedition Yak
With the exception of PvP reward mounts, all mounts are account-wide. Mounts that a character is eligible to use will be displayed in your Mount Journal. Certain mounts have profession/faction/class requirements and will only be available for characters that meet them. As an example, Horde/Alliance faction mounts will only show up in the Mount Journals for characters of that faction.
If you’re interested in learning more about what types of mounts, pets, or achievements are account-wide, check out this knowledge base article