Mouse’s curiosity extends to everything around him, including what is inside his friends’ diapers. He examines what Hare and Goat are wearing, along with the diapers of other friends, until they decide to inspect his in return.

A lift-the-flap discovery

The book’s lift-the-flap illustrations make the act of looking part of the reading experience. As the friends compare what they find, the story connects their playful curiosity with learning to use the potty.