
One note: As of right now, the spell to learn the pets is BOP, and once learned, they are not tradeable. I know it is early in the PTR cycle, but I made a thread about it anyway just in case it is intended: http://us.battle.net/wow/en/forum/topic/9499699987#1

ZAMGGG HOW DO I MAKE THEM?
To get the schematic on the PTR, you have to kill something in Pandaria on your Engineer, and it drops this book. May take a few kills, I have gotten them in Vale, Valley, and Summit. Once you "read this book", it will be consumed and you will learn the following five items:

Which look like this in your Engineering pane:

Note I only threw in Sky Golem for reference. The Advanced Refridgeration Unit requires 5 Jard's and 5 Living Steel, and is a 36 slot cooking bag.
Pierre!!


Next to a male belf, for size comparison.

With a pet biscuit, he is an unsettlingly large animated oven...

His idle animation, he flips a pancake then acts all proud of himself (as he should be!)

I know Pierre isn't really new, but at least he made it in to the PTR finally! His running animation is hilarious too.
Video:
https://www.youtube.com/watch?v=twCMSf-jIr0
Battle Pet Abilities:

Rascal-Bot!!


Size comparison against male belf, with and without pet biscuit.

No real animations to speak of, beside normal goblin idle animations. Heres a video: https://www.youtube.com/watch?v=YYz4etWlAd4
Battle Pet abilities (and if I may say so myself, are quite clever):

Annnnnnnnnnnd with that being done, I am going to try and take a break from the PTR.
