Feed Me!: A Simon's Cat Book

Wake Up!: A Simon's Cat Book

The Bumper Book of Simon's Cat

Simon's Cat: Off to the Vet . . . and Other Cat-astrophes

Simon's Cat vs. The World!

Play Time!: A Simon's Cat Book

What If?: Serious Scientific Answers to Absurd Hypothetical Questions

I Am Pusheen the Cat

What If? 10th Anniversary Edition: Serious Scientific Answers to Absurd Hypothetical Questions

How to Be Perfectly Unhappy

The Odd 1s Out: How to Be Cool and Other Things I Definitely Learned from Growing Up

The Odd 1s Out: The First Sequel

Heart and Brain: An Awkward Yeti Collection

What If?2: Additional Serious Scientific Answers to Absurd Hypothetical Questions

The Boondocks: Because I Know You Don't Read the Newspaper