This is the first in a line of four books within the National Geographic Kids Chapters series that explore unexpected animal bonds. In this book you'll meet four unlikely pairings, including Billy and Lilly. Billy the boxer adopted Lilly the goat when she was abandoned by her mother. Billy and Lilly are rarely apart since Billy has taken on the role of Lilly's protector, caretaker, and constant companion. This and the other stories in this book...