Did this all through my 50's on my druid. Here is what I learned:
- Give preference to wolves as pets. They are slightly higher level on average than the bears.
- Use haste and thorns on your pet.
- Snare EVERYTHING. Especially your pet (I refresh before each charm). Nothing ruins your cycle quicker than a runner that aggros tentacle terrors.
- I used my level 24 root. I found it gave me enough time compared to mana efficiency.
- Use Invis to Animals (quicker and mana cheaper than Camo) to break your charm. Any time charm is broken all damage is cleared to give you full exp.
- < 5% health is your magic level that gives you enough time to cast invis to break charm, root, and ES vambraces to death anything. ES Vambraces are about 2% per cast IIRC. So you may need 3.
- Once you have a mob down to 5% its snare should make it stay in place. Break your charm, run to the other end of the room, recast charm, then ES vambraces the mob before sending your re-charmed pet (which should be at about 60% life) on another mob. Let it work while you DoT your prior mob. That's your basic pattern.
Hope this helps.