I Was a Second Grade Werewolf by Daniel Pinkwater
Total elation! I read this book when I was a kid and completely obsessed with werewolves. Remember the movie Teen Wolf? I loved it! Then there was the Teen Wolf cartoon on Saturday mornings. It was a joy to reread this book as a big person. Guess you want to know what the book is about huh? A 2nd grader becomes a werewolf for a day but no one in his life takes notice. He resorts to eating pencils and growling during storytime in class. This book is AWESOME!