I wish I had that one too.
Why are all the coolest pets untamable?!
It's a good thing. I would have liked to to have one of them too, but seeing how ANY wolf was THE pet to have in Wrath, there would have been way too many people running around with exactly that model.
Instead I am getting to see it only occasionally, and feeling a little envious is alright, especially at times where everybody is wearing the same armor and has the same weapons.