My Secret Unicorn: A Touch of Magic by Linda Chapman
Model Number: 9780241370865
Number 8 My Secret Unicorn series.
Most of the time, Twilight looks like an ordinary grey pony, but when Lauren says the words of a spell he transforms into a magical unicorn and together they can fly all over the world...
When Lauren's brother Max makes friends with two new boys, he forgets about looking after Buddy, his puppy. Lauren tries to hide it from their parents, knowing that if they found out Max would get into a lot of trouble and they might even send Buddy away! Can a touch of magic help to show Max how important Buddy really is?
For ages approx. 8 years+.