MMO-Champion did some digging within the latest 4.2 PTR build. They are reporting that the Dragonwrath Whelpling has been renamed to Lil' Tarecgosa, but something even more interesting was discovered. A new... pet?
Creepy Crate: Right Click to summon and dismiss your... crate?
The crate companion is Bind on Pick Up, but its origins are still unknown. Needless to say, this may be as close as players will get to owning an item similar to the infamous Weighted Companion Cube!