Book excerpt: Always be yourself. Unless you can be a unicorn . . . When she's abandoned just before Christmas, Peggy the pug is taken in by a foster family with a unicorn-mad little girl. Peggy thinks that her new friend, Chloe, wants a unicorn for Christmas - not a puppy. Believing that anything is possible, Peggy decides that she will turn into a unicorn. All she needs is a long silky mane, a glowing horn, and the ability to do magic! Easy, right? Peggy is determined to make her new friend's Christmas wish come true. And if she does, maybe she'll finally find a forever home . . .