My Secret Unicorn: A Touch of Magic (Book 8)

Lauren's pony, Twilight, turns into a beautiful unicorn when she says the magic words. Caring for your pet is really important to Lauren, especially if your pet turns out to be as special and as magical as Twilight, but her little brother Max disagrees. He has grown tired of looking after Buddy, his big, lively puppy and leaves him all alone while he goes out to play on his skateboard. But one day Buddy goes missing and Max is distraught. Lauren secretly turns Twilight into a unicorn and together they fly over the woods in search of the young dog. They find him, but he's badly injured. Twilight uses his new-found healing power to save Buddy. Max promises never to neglect his pet again - after all, you can't be best friends with a skateboard like you can with a dog!