[Toward Shattered Hoof - a Cave]

Hopefully he won't. But the possibility will be reduced slightly by Rusty failing to return to his own sleeping spot.

Instead, he may be inching closer to Heim's watch position.
"Sooooo. Ready for an exciting time watching rain do rainy things?"

He sounds slightly more enthusiastic than necessary, although the volume is kept down.
Wouldn't want to wake up the others, after all.