Give a Dog a Bone: Stories, Poems, Jokes, and Riddles about Dogs, By Joanna Cole, Stephanie Calmenson, Scholastic; Reprint edition (August 1, 1999)
Popular children's book authors Joanna Cole and Stephanie Calmenson bring together dog poems by Rudyard Kipling, Myra Cohn Livingston and others; a rebus story; canine facts and photos; jokes, riddles and stories. Ages 7-10

The World's Greatest Knock-Knock Jokes for Kids!, by Bob Phillips
Ages 9-12

1000 Knock Knock Jokes for Kids, by Michael Kilgarriff
Kids can never get enough knock-knock jokes. For the insatiable riddler, here are 1,000 jokes that will satisfy the need to tease. Here are knock-knocks about names, songs, insults, sayings, puns, and many, many more, in this laugh-out-loud anthology of knock-knock jokes kids will love. Ages 9-12

500 Hillarious Jokes for Kids, by Jeff Rovin
An Amazon.com reader writes: Kids from 8 to 12 love jokes and this joke book is for them. Easy to read, predictably corny, these jokes will keep them reading and improve their memory skills.
If you have a long car trip ahead or, better yet, your grandchildren do, get them this joke book. It will keep the kids entertained and the driver thankful for those long car naps when he/she doesn't have to "knock-knock".

Blue's Riddle Game, by Alice Wilder and David Cutting
Are you ready to play a new game? Blue and each of her friends have rhyming riddles to tell. Guess the answers, and then check if you're right by turning the answer wheel so that Steve points to the riddle teller. Can you guess them all? Ages 4-8

Riddles and More Riddles (Beginner Books), By Bennett Cerf
A collection of riddles, such as "When is a cook bad? When she beats an egg." and "What kind of coat should be put on when it is wet? A coat of paint." Inside Flap Copy: "Why do birds fly south?" "Because it is too far to walk." Riddles and More Riddles! contains funny, laugh-out-loud riddles that kids will love to read and retell over and over again! Ages 4-8