User blog comment:Bumfree/Multiplayer mounts/@comment-4872270-20120411185635

Yes you can, Bonzo (the first bull) is unlocked at level 50, the Buffalo (yes, you can ride buffalo) is unlocked at level 50 when you pass into legend, the Albino (white) Buffalo is unlocked at level 50 when you pass into legend twice, the Super Bull is unlocked at levl 50 when you pass into legend three times and finally the Zebra Donkey (yes, zebra DONKEY) is unlocked at level 50 when you have passed into legend four times.

May I also point out that every time you pass into legend, all mounts are unlocked at a lower level and you get a new character.