Assuming you can get one charmed in the first place, buff your pet with granite stance and you'll probably never have to make a break for the zone unless you've just caste granite stance before recast time is up and it decides to take a bunch of damage from a few mobs and granite stance wears off.
Iceflame Guard(or Body) helps quite a bit in prolonging granite stance's lifetime.
I find it fun to give it all the pet toys I possibly can and loot it later when i decide ol' Jabarn needs to come out of suspension.
Granite stance not only makes this pet a god by mitigating 1/3 the incoming damage, it also snares it by 80% which REALLY helps you mez/charm it again without a problem. By the way...if you happen to be insane or daft, do not cast Velocity or Expedience with granite stance on...it will break it.