Paddy The Beaver in "Paddy Starts His House"

He would scramble out onto the platform and waddle over to the pile in the middle, where he would put the mud and pat it down. Then back to the bottom for more.And so the mud pile grew and grew, until it was quite two feet high.
"Now," said Paddy, "I'll build the walls, and I guess you can't help me much with those. I'm going to begin them tomorrow night. Perhaps you will like to see me do it, Cousin Jerry."
"I certainly will," replied Jerry, still puzzling over that pile of mud in the middle.