This little book is jam-packed with good, clean jokes about Coconut the dog and Licorice the cat. My 6 1/2yr. old got this for Christmas because she loves trying to make up knock-knock jokes. Even though there aren't any knock-knock jokes, she still loves it and says it was her favorite Christmas gift (beating out zhu zhus!). Some of the jokes she doesn't quite get yet, but I think in the next year or so, they'll be great. Highly recommended!