"And it looks like Mrs. Beaver is expecting us. I'll lead the way; you step carefully and don't slip."

"Erm," says Bella. "I'm practically guaranteed to slip - maybe I'd do better on my hands and knees, I suppose."

"As you like," agrees the beaver, and he leads them across the top of the dam to the house.

Bella sighs and crawls, glad of her mittens.