Issued on Playaway, a dedicated audio media player.
One set of earphones and one AAA battery required for listening.
"Sassy and Waldo love trips! When they put on their trench coat, everyone thinks they're a human kid named Salty. They can go to all places that don't let dogs in. Like School. And the museum. Stewart says the museum is all facts and learning. He is not excited to go there. But Sassy and Waldo have a permission slip that says lunch on it. How can a trip to a place with lunch be bad? Sassy and Waldo are very excited for their class trip. And that's before they find out about the giant bones. "-- Provided by publisher.