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Mo Willems Books in Order
Mo Willems is a renowned #1 New York Times Bestselling author and illustrator. His critically acclaimed picture books, including the Caldecott Honor-winning Don't Let the Pigeon Drive the Bus and Knuffle Bunny: A Cautionary Tale, have captivated readers of all ages. His extensive body of work also includes beloved titles such as Leonardo the Terrible Monster, Edwina the Dinosaur Who Didn't Know She Was Extinct, and Time to Pee. Willems' groundbreaking series, Elephant and Piggie, has become a staple in early reader literature, offering humorous and heartwarming stories about friendship and growing up. With his unique blend of wit, charm, and artistic flair, Mo Willems has cemented his place as one of the most celebrated children's authors of our time.
Bibliography verified: March 2026
Quick Answer
What are all of Mo Willems's book series? Mo Willems has written 10 book series. The most notable is the Cat the Cat series.
Complete series list with all books in reading order below.
Book Series by Mo Willems
- #1
Cat the Cat Who Is That?(2010) - #2
Let's Say Hi to Friends Who Fly!(2010) - #3What's Your Sound, Hound the Hound?(2010)
- #4
Time to Sleep, Sheep the Sheep!(2010)
- #1
Are You Ready to Play Outside?(2001) - #2
Today I Will Fly!(2007) - #3
My Friend is Sad(2007) - #4
I am Invited to a Party!(2007) - #5There Is a Bird on Your Head!(2007)
- #6I Love My New Toy!(2008)
- #7
I Will Surprise My Friend!(2008) - #8
Watch Me Throw the Ball!(2009) - #9
Elephants Cannot Dance!(2009) - #10
Pigs Make Me Sneeze!(2009) - #11
I am Going!(2010) - #12
Can I Play Too?(2010) - #13We are in a Book!(2010)
- #14
I Broke My Trunk!(2011) - #15
Should I Share My Ice Cream?(2011) - #16
Happy Pig Day!(2011) - #17
Listen to My Trumpet!(2012) - #18
Let's Go for a Drive!(2012) - #19
A Big Guy Took My Ball!(2013) - #20
I'm a Frog!(2013) - #21
My New Friend Is So Fun!(2014) - #22
Waiting is Not Easy!(2014) - #23
I Will Take a Nap!(2015) - #24
I Really Like Slop!(2015) - #25
The Thank You Book(2016) - #26
An Elephant & Piggie Biggie Volume 2!(2025) - #27
An Elephant & Piggie Biggie!(2025)
- #1
The Cookie Fiasco (With: Dan Santat)(2016) - #2
We Are Growing!(2016) - #3
The Good for Nothing Button (With: Charise Mericle Harper)(2017) - #4
It's Shoe Time! (With: Bryan Collier)(2017) - #5
The Itchy Book! (With: LeUyen Pham)(2018) - #6
Harold & Hog Pretend For Real! (With: Dan Santat)(2019) - #7
What About Worms!?(2020) - #8
I'm On It!(2021) - #9
It's a Sign! (By: Jarrett Pumphrey,Jerome Pumphrey)(2022)
- #1
Knuffle Bunny(2004) - #2
Knuffle Bunny Too(2007) - #3
Knuffle Bunny Free(2010)
- #1
Leonardo, the Terrible Monster(2005) - #2
Sam, the Most Scaredy-cat Kid in the Whole World(2017)
- #1
Opposites Abstract(2021) - #2
Are You Big?(2024) - #3
Are You Small?(2024) - #4
Me and Other Bunnies(2025) - #5
The Pigeon WON’T Count to 10!(2025) - #6
It's My Bird-Day!(2026) - #7
Every Man for Himself(2005)
- #1The Pigeon Has Feelings, Too!(1994)
- #2Don't Let the Pigeon Drive the Bus!(2003)
- #3The Pigeon Finds a Hot Dog!(2005)
- #4The Pigeon Loves Things That Go!(2005)
- #5
Don't Let the Pigeon Stay Up Late!(2006) - #6
Pigeon Wants a Puppy!(2008) - #7
The Duckling Gets a Cookie!?(2012) - #8
Don't Let the Pigeon Finish This Activity Book!(2012) - #9
The Pigeon Needs a Bath!(2014) - #10
The Pigeon HAS to Go to School!(2019) - #11
The Pigeon Will Ride the Roller Coaster(2022) - #12
Don't Let the Pigeon Drive the Sleigh!(2023) - #13
Will the Pigeon Graduate?(2025)
- #1
You Can Never Find a Rickshaw When It Monsoons(2006) - #2Naked Mole Rat Gets Dressed(2009)
- #3
Big Frog Can't Fit In(2009) - #4
City Dog, Country Frog(2010) - #5Hooray for Amanda & Her Alligator!(2011)
- #6
Goldilocks and the Three Dinosaurs(2012) - #7
That Is Not a Good Idea!(2013) - #8
Diva and Flea(2015) - #9
Nanette's Baguette(2016) - #10
Welcome(2017) - #11
A Busy Creature's Day Eating!(2018) - #12
Because(2019) - #13
Be the Bus(2023)
- #1Time to Pee!(2003)
- #2
Time to Say(2005)
- #1
I Lost My Tooth!(2018) - #2
Who is the Mystery Reader?(2019) - #3
I Want to Sleep Under the Stars!(2020) - #4
Guess What!?(2021) - #5
The FRUSTRATING Book!(2022)
About Mo Willems
Mo Willems is a renowned #1 New York Times Bestselling author and illustrator. His critically acclaimed picture books, including the Caldecott Honor-winning Don't Let the Pigeon Drive the Bus and Knuffle Bunny: A Cautionary Tale, have captivated readers of all ages. His extensive body of work also includes beloved titles such as Leonardo the Terrible Monster, Edwina the Dinosaur Who Didn't Know She Was Extinct, and Time to Pee. Willems' groundbreaking series, Elephant and Piggie, has become a staple in early reader literature, offering humorous and heartwarming stories about friendship and growing up. With his unique blend of wit, charm, and artistic flair, Mo Willems has cemented his place as one of the most celebrated children's authors of our time.
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