When an ancient tree plummets right into the center of the dam, the beaver brothers decide to bicker over whom will get to take the first bite. They eventually agree to bite it at the same time, though when they do, they find themselves suddenly children again and they must try to figure out a method of getting back to their original forms.
- Second time when Norb and Dag are shown at a younger age. 
"Muscular Beaver 4"
"Too Loose Latrine"