I'm actually trying to do Rragar's menagerie (HM) and have some difficulties killing the fleshreavers (especially the fleshreavers hounds).
So is there anyone who would be nice and give a poor noob (that's me
) some advices and tips ? Thanks by advance.
Btw : Being usually alone in the guild when I can play, I'm trying to do it with 7 heros. And my character is a warrior (can have any secondary professions).

You can flag your heroes back, aggro the hounds, move back and forth to get them to cast RoJ, then draw them back and kill them as quickly as you can. It worked for me.
While that works pretty well in NM, in HM their RoJ is on a 10sec recharge. You'll have to be exceedingly quick at moving in and killing them to avoid getting nailed the second time.
).