Diane deGroat is the illustrator of more than 120 children's books and the author-illustrator of another I Can Read Book about Gilbert, Gilbert, the Surfer Dude, as well as bestselling picture books about Gilbert, including: Ants in Your Pants, Worms in Your Plants! (Gilbert Goes Green); April Fool! Watch Out at School!; Mother, You're the Best! (But Sister, You're a Pest!); Last One in is a Rotten Egg!; Trick or Treat, Smell My Feet; Jingle Bells, Homework Smells; Happy Birthday to You, You Belong in a Zoo; No More Pencils, No More Books, No More Teacher's Dirty Looks!; and the New York Times bestseller Roses are Pink, Your Feet Really Stink. She is also the illustrator of Charlie the Ranch Dog by Ree Drummond.