Tiny Sporebat

Really cute, and she can fly alongside you when you are on a flying mount

This is actually a really good pet that's easy to underestimate. For one thing, it has a pretty decent array of 3 different elements of abilities, which makes it fairly versatile pending which trainer you need to kill. It's also the only pet I've seen that has several Flying attacks and a self-heal, which is a pretty good combo if you're trying to train against water pets (which are very common in Pandaria). While I can't guarantee there are no other pets with Flying attacks and heals, it certainly isn't a common combination. As an added perk, it's also pretty freaking easy to get this pet, since all you need is to grind to exhalted with Sporregar to get it.

In the current MOP BETA, the pet journal has flavor text for most of the pets. Tiny Sporebat's is as follows: "Wild spirebats are vicious creatures, but if tamed at a young age, they can be loyal companions."

This pet is listed as a "Flying" pet, and it's one ability thus far is "Slicing Wind".