Choose Your Own Adventure: Your Baby Unicorn (Book)

When your new baby brother arrives, your parents understand that you’re a little jealous. They give you something of your very own to care for–a pony named Sunny. But Sunny isn’t your average pony. When the annual blueberry festival fills your town with the sweet smell of blueberries, Sunny magically transforms into a unicorn! Can you keep your new baby unicorn a secret?