Frankly i didn't have a problem clearing all of the bc instances with 5 hunters using gorilla pets, but when I first tried UK at 70 prince 3 shotted my gorilla and things went south, although I didn't rez any of the pets during the fight and I still managed to get prince down to 30% before wiping.
Quote Originally Posted by 'Fef',index.php?page=Thread&postID=159119#post1591 19
I have been playing 5 hunters with RAF until level 55. I had a druid waiting at that level that I planned to swap one of the hunters for. I don't have experience of WotLK instances yet (my group is level 71), but I can share my impressions of WoW and BC instance.

Having a dedicated healer is key. Five pets provide quite a lot of tanking ability, but elite mobs, in particulars instance boss, will go through them really easily. They will certainly die too quickly (at level) to be kept alive by Mend Pet only.

Good tanking pets are also important. I like cats for outside world, but I go in instances only with gorillas. The AOE tanking ability is very precious and lets my druid heal freely, even when adds pop. Priceless.