The Wild Thornberrys: Animal Riddles (Nickelodeon) Paperback – January 1, 2001 by David Lewman 
 
Where do hyenas like to race? On a laugh track! Why did the turtle go to Philadelphia? To see the Liberty Shell! Riddles, riddles, everywhere - and all of them are about animals! Here's a collection of wacky riddles about the many creatures Eliza and her family encountered in their travels, including snakes, gorillas, giraffes, and even warthogs!
 
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