Books by Mo Willems
31 books by Mo Willems, rated for reading level and content intensity.
Mo Willems has 9 rated books in HootRated's catalog spanning Grade 1–6 reading level. The typical Mo Willems book lands at Grade 2, with average content intensity 1.1/5. Most Mo Willems titles fall within the Elephant & Piggie series.
Reading level alone doesn't tell parents whether a Mo Willems book is right for a child. 100% of Mo Willems's rated titles are at Gentle or Mild intensity — appropriate for sensitive readers or kids reading ahead of their emotional readiness. 0% are rated Intense or Very Intense. The intensity badges below (green → red) help you match books to your child's emotional readiness, not just their reading ability. See our methodology for how we rate.
What's your sound, Hound the Hound?
Mo Willems
What's your sound, Hound the Hound?
Mo Willems
Time to sleep Sheep the Sheep!
Mo Willems
Time to sleep Sheep the Sheep!
Mo Willems
Goldilocks and the three dinosaurs
Mo Willems
Goldilocks and the three dinosaurs
Mo Willems
Who is that, cat the cat?
Mo Willems
Who is that, cat the cat?
Mo Willems
Who says that, Cat the cat?
Mo Willems
Who says that, Cat the cat?
Mo Willems
Who sleeps, Cat the cat?
Mo Willems
Who sleeps, Cat the cat?
Mo Willems
The duckling gets a cookie!?
Mo Willems
The duckling gets a cookie!?
Mo Willems
A Big Guy Took My Ball
Mo Willems
A Big Guy Took My Ball
Mo Willems
Don't Let the Pigeon Drive the Bus!
Mo Willems
Don't Let the Pigeon Drive the Bus!
Mo Willems
Edwina, the dinosaur who didn't know she was extinct
Mo Willems
Edwina, the dinosaur who didn't know she was extinct
Mo Willems
The Pigeon finds a hot dog!
Mo Willems
The Pigeon finds a hot dog!
Mo Willems
Time to Say "Please"!
Mo Willems
Time to Say "Please"!
Mo Willems
I'm a frog!
Mo Willems
I'm a frog!
Mo Willems
Sam, the most scaredy-cat kid in the whole world
Mo Willems
Sam, the most scaredy-cat kid in the whole world
Mo Willems
Opposites Abstract
Mo Willems
Opposites Abstract
Mo Willems
I will surprise my friend!
Mo Willems
I will surprise my friend!
Mo Willems
Watch me throw the ball!
Mo Willems
Watch me throw the ball!
Mo Willems
Today I will fly!
Mo Willems
Today I will fly!
Mo Willems
There Is a Bird On Your Head! (An Elephant and Piggie Book) (Elephant and Piggie)
Mo Willems
There Is a Bird On Your Head! (An Elephant and Piggie Book) (Elephant and Piggie)
Mo Willems
I am invited to a party!
Mo Willems
I am invited to a party!
Mo Willems
Elephants cannot dance!
Mo Willems
Elephants cannot dance!
Mo Willems
We Are in a Book! (Elephant & Piggie)
Mo Willems
We Are in a Book! (Elephant & Piggie)
Mo Willems
I Broke My Trunk! (An Elephant and Piggie Book)
Mo Willems
I Broke My Trunk! (An Elephant and Piggie Book)
Mo Willems
Don't Let the Pigeon Finish This Activity Book!
Mo Willems
Don't Let the Pigeon Finish This Activity Book!
Mo Willems
Should I share my ice cream?
Mo Willems
Should I share my ice cream?
Mo Willems
A big guy took my ball! sike
Mo Willems
A big guy took my ball! sike
Mo Willems
The pigeon needs a bath!
Mo Willems
The pigeon needs a bath!
Mo Willems
It's My Bird-Day!
Mo Willems
It's My Bird-Day!
Mo Willems
I Really Like Slop!
Mo Willems
I Really Like Slop!
Mo Willems
It's shoe time!
Mo Willems
It's shoe time!
Mo Willems
Can I Play Too?
Mo Willems
Can I Play Too?
Mo Willems
Questions about Mo Willems's books
- What reading level are Mo Willems's books?
- Mo Willems's rated books range from Grade 1–6, with the typical book at Grade 2. Each title has a separate content intensity score so parents can choose by emotional readiness, not just text difficulty.
- Are Mo Willems's books appropriate for sensitive readers?
- 9 of Mo Willems's 9 rated books (100%) are at Gentle or Mild intensity — safe for sensitive readers. 0 (0%) are rated Intense or Very Intense. Average intensity: 1.1/5.
- What age are Mo Willems's books appropriate for?
- Mo Willems's rated books target Ages 9–12 and Ages 5–8. HootRated rates each book on reading level and content intensity — match both dimensions, not just one.