Share this Page Discover Like Books Books similar to Let's Say Hi to Friends Who Fly! Other books by Mo Willems Other books with same Classifications Humor Picture Book English Language Arts Other books with same Subjects Animals Flight Cats Animals--Fiction Animals--Juvenile fiction Picture books Children's Books/Ages 4-8 Fiction Juvenile Fiction | Humorous Stories Juvenile Fiction | Animals | General Flight--Fiction Flight--Juvenile fiction Cats--Fiction Cats--Juvenile fiction