I have to agree with the above posts. I have Hammerjaw for a few days now, and while his damage is higher than mythic/legendary pets, his happiness bonus and arcane ability are not any better than many other pets. I think it should be slightly better to make him worthy of being "Arcane". Also, it would be nice if his passive ability continued to improve as he levels up. It seems it's been the same for the last 10+ levels.