It's a book of world records... of bones! Guess whose bones are the longest, shortest, heaviest, spikiest, and more. With touchable skeletons! Ten record-breaking animal bones are introduced through a series of superlatives set up as a guessing game with clues. Readers examine animals' skeletons and guess to whom they belong; the answers are revealed in vibrant, full-color scenic habitats, with easily understood -- and humorous -- explanations. This entertaining introduction to the connection between animal bones (anatomy) and behavior is playful, relatable, and includes touch-and-feel finishes that bring the bones to life!