9781416531906 | Free Pr, November 14, 2006, cover price $15.95 | About this edition: Presents a compendium of animal trivia, including such behavioral factoids as the sunbathing practices of tuna, the electricity-generating abilities of certain cattle, and the tap dancing talents of caterpillars.

9780593056936, titled "Why Pandas Do Handstands...: And Other Curious Truths About Animals" | Transworld Pub, October 23, 2006, cover price $15.55 | About this edition: Features facts about the animal kingdom, from the only dog that can develop gout to the wren whose song sounds just like Beethoven, and from the cattle that generate electricity to the worm that has the power to brainwash.

9781451624274 | Free Pr, December 1, 2010, cover price $19.99