- ISBN: 9781680103700 | 1680103709
- Cover: Paperback
- Copyright: 9/7/2021
On his way home through the woods, Mouse hears a loud AAA-OOO! He thinks it's Owl, and Owl thinks it's Mouse. Bear grumbles, "Which one of you made that awful AAA-OOO?" Then Moose, Duck, and other animals hear it, too, and they're all afraid. Could it be a monster making that terrible noise?