Set fire to your pet and get a 30% dmg buff

This trick is pretty simple. First you need to go to Townlong steppes :

Here you need to find the below mob, and wait for it to cast this:

Now, Once you killed it, make sure you and pet, are inside of circle of the spell he casts when he die. Then fly straight up till pet despawns:

Now Land somewhere outside of circle and your done - 30% damge buff to your pet! 

This also works on warlock pets, and work untill your pet die. It even after loggin off.