Why not get a wolf at lvl 30...pretty simple...you can, but you will probably stash it in your inv like me for a good deal of time...
That's because you will have to hunt in the ravine...earth ghosts , gun powder are not a problem even if they attack the wolf, you should have plenty of time to hit them for greater dmg than the wolf and make them turn their attacks to you...the big problem are taoists...coz their magic does AOE(splash) damage, and your wolf will get damage simply by standing next to you, not even being attacked...plus they sometimes get burnt and fry like a pig

...(sry but i dont use pet abnormal state potions

)
Thus if you want to level up the wolf at 30, just set it on non-aggresive and go fight earth ghosts and gun powders, even headless monsters near dw...i am lvl 30 myself...so about higher lvl mobs : i do not know anything about...
At least, that's my oppinion...do not flame on it...or maybe do
