Before we showed up, the Fire Nation had been through his forest. The soldiers had completely burned the place down, there was nothing there but ash. [And was Sokka angry about this? Very.]

Hei Bai - that's his name by the way - was taking it out on a nearby village each night. They asked Aang to try to talk to him, but he wouldn't listen and kept trashing the town and attacking Aang. So I uh, tried to go out there and help him fight it. Kinda didn't work out so well for me. The next night, Aang was able to show Hei Bai that even though the forest was gone, that it would still grow back and the animals would return. So I guess that was enough, because he let me and the others return to the regular world.