"they don't get wet"

We were sitting at the table eating lunch and the girls asked me if the river otter was out in the pond behind our house today (yes, there was an otter in the pond the other day)... and I told them that he probably wasn't out there, cause it's raining, and he doesn't like to get wet. Then Allie piped up and said, "well, he could stay under water and stay dry".... all of us just cracked up with Allie looking at us puzzled with that "what?" look.