Blackfeather Woods if I had a voice, I would sing

The boy felt teeth latch onto his tail and he exploded, turning to snap at the girl with an outraged snarl.
How dare she! He'd been training with Tundra and she said he was good. And needed practice. 
So, here was his practice.

The boy swung his body round to rip his tail from the girl and put his own teeth on her, but he had miscalculated how close the edge was. His back leg slipped over the edge and, with a terrified squeak, slipped backward, pulling the girl with him.

They fell and his organs seemed to fly out of his body through his throat, then a sharp thump of pain hit his as they hit a ledge. And he was a cushion to the girl. What kinda deal was that! She was the meanie. He lay dazed for a minute, figuring what happened and realised they'd fallen to a ledge on the ravine wall. Too high for them to climb out. He rolled and stood up on shaking legs, trembling in solid fear of falling or maybe even the rat that ate his bird friend might come back. 
Desperately, he threw his head back and called for help.
He hoped @Moonshadow or @Tundra would come. Heck, even the silver beastie was welcome to save them. 

He looked to the girl with terror. The ledge wasn't very big, only just big enough. He sat down, not wanting to fall off the edge.