During a raid yesterday I used (improved) Infernal for AOE fight in Hellfire. I disabled the taunt and I let him lose to kick some ass, on the contrary it kept dying almost within a few seconds. I re-summoned him a few times and then I just gave up. I clicked on my pet name and only saw the value up to 157K HP. I focus a hunter and click on his pet and it was showing 435K hp. Am I missing something? Thanks!