After they nerfed BM in heroic i was bored one day and so we tried BM with my pet as tank.
The group,
Adds: Hunter 2
Tank: My pet
Dps: Me
shadow priest
ret pally
Healer: pally
With using the pally buffs, fort, food, and me putting on pvp gear and Legging of beast mastery we managed to get my pets HP up to 12.5k and armor to 17k.
Since doing this let us have an extra dps in the group since a pet was tanking the fact that we couldn't go all out was kinda made up for. We did have to be careful but in the end Heroic BM is now tankable by a BM hunter's pet.