The Pop-Up Pup

The Pop-Up Pup is an in-universe book, which was first shown in "Pups Save Midnight at the Museum".
Not much is known about The Pop-Up Pup, beside that it is Marshall's favorite storybook.
On the cover is a pup with brown, tan, and white fluffy fur. The pup is standing on a snowy mountain, with the Aurora Borealis in the sky. The spine of the book is a bright yellow.
*This is the fourth in-universe book.
**The first being the Apollo the Super-Pup comic, second being Heidi Hopper: The Bravest Bunny in the World, and third being Pupinator.
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Midnight at the Museum 17.png|Ryder reading the book to the pups.
Category:In Universe Products