By now, you are hopefully familiar with the Imponderables series of books, those tremendous tomes of teasing trivia, where author David Feldman has the nerve to ask those all-important questions of the nature of existence, such as "Why are there tiny holes in the ceiling of my car?" (As for me, such a question is merely proof that said driver does not have their eyes on the road, a frequent phenomenon on today's highways!) Anyhoo, Penguins is one of the better books in the series, if for no other reason than the fact that it attempts to answer the immortal question (drum roll, please): Does anyone really like fruitcake?? (Sorry, but I can't reveal the answer here: Feldman is a professional in such matters, and I dare not paraphrase his response one iota!) As with When Do Fish Sleep, the bulk of this book is given to Feldman considering such questions, submitting the questions to acknowledged experts in the field (Is there a fruitcake expert?) and printing their responses, or the competing theories if there is more than one answer. (In the example above, the Fruitcake Question was posed in the Frustables section, which Feldman uses to ponder matters that seem to defy easy explanation, then prints the best responses in the next book in the series. This is how he hooks you into buying more than one book! Pretty clever, huh?) As always, Kassie Schwan's delightful illustrations add to the humor. (Yes, this is a humor book!) In any case, this sixth volume in the seemingly endless series of books is one of the best, and as I have stated in another review, makes a perfect read in the bathroom! So, get Do Penguins Have Knees, and other books in the Imponderables series today. As Jim Morrison, the immortal lead singer for the Doors once said, "I see the bathroom is clear...."