So, there I was on my perch atop AH and spied some people doing some rather odd-lookin' bits with their mounts. I popped down for a look-see.

Mojo Frog, a non-combat pet, can be acquired via Zul'Aman (something about removing a hex with a stick and the player who is doing the removing has a chance to score the nifty frog pet).
It's interactive, the pet.
If you emote /kiss at it - it'll whisper something back at you (supposedly, I've only read about this).
Sometimes it'll turn you into a frog as well.

The above embed is, as you can see, what happens if you /kiss Mojo while mounted.
Heh. :)

[edit: Vegas, while nifty, is a little frustrating for me now so this was put together via Windows Movie Maker]