I enjoy making my guildies and friends irrate with me and how big some of my mounts are. I know the Ice Cleft whatever can get pretty big, especially if you use the manastorm trinket and a grow pot, but what are some of the other bigger mounts in your opinion?
Vile Fiend is a pretty big one.
Any of the Gronling mounts as well as the minion of grumpus mount
Porto drake.
That brontosaurus who has an Auction House is pretty big, but lanky.
The biggest mount I regularly use is the Grand Exp Yak, which superceded the Mammoth with vendors (I prefer having a 'mog bot with me at all times).