Penelope Rex might finally have bitten off more than she can chew—a pet saber tooth tiger!—in this companion to the #1 New York Times bestselling We Don't Eat Our Classmates by Ryan T. Higgins.

Most kids have dogs and cats and fish and guinea pigs. Penelope Rex has Mittens. 

Penelope wasn’t sure she even wanted a pet when Mittens came into her life. But now that he’s here, she is determined to make the best of it. 
Pets, however—especially ones that are six hundred pounds with six-inch-long teeth—can cause very big, very messy problems.

In this companion to We Don’t Eat Our Classmates, Penelope Rex discovers the challenges and rewards (but mostly challenges) of pet ownership.

Read all of the Penelope Rex books!
  • We Don't Eat Our Classmates
  • We Will Rock Our Classmates
  • We Don't Lose Our Class Goldfish

Bundle Up, Penelope Rex!

by Ryan T Higgins

Published 2 September 2025
#1 New York Times best-selling author-illustrator Ryan T. Higgins presents everyone's favorite dinosaur Penelope Rex in her board book debut, perfect for winter time.

Penelope Rex wants to play in the snow. Her pet saber tooth cat wants to help her get ready. But saber tooth cats prefer to play . . . 

Join Penelope and Mittens the saber tooth cat as they prepare to play in the snow in this cozy and funny wintertime entry in the Penelope Rex canon.

Read all of the Penelope Rex books!
  • We Don't Eat Our Classmates
  • We Will Rock Our Classmates
  • We Don't Lose Our Class Goldfish
  • Penelope Rex and the Problem with Pets