It has been since 2004 that I have been lvl 41 so I am going off distant memory here. What do you start your pulls with? If you are using your taunt first don't. Pull with Farie Fire (feral), I dont remember when you can get this. If you dont have it yet pull with a moonfire then drop bear. This gives you the 60% chance to get the rage from Furor, which will give you the rage to swipe and puts a dot on the target which gives you some additional threat (but not much).
On a side note I learned a long time ago that if u run with a good dps they can pull agro if they really want it (although once you get up to 80 and geared they will have to work a lot harder to get it). My brother is a warlock and used to do it all the time in BC so I would let him die. He finally learned. Just kindly remind whoever it is that dead dps is low dps. Save your taunt to grab a mob off your healer and dont blow it taunting off dps unless you think your healers are safe.
Feral Druid bear/cat