Richard Wellesley & White Magic Studios 
The Hedgehog, The Dog, The Donkey and A Little Girl [EPUB ebook] 

One night Isaac, a very clever hedgehog, is visited by his Grandfather’s ghost. He tells Isaac that he is far too clever to live the lazy life of a hedgehog; he must go out and find a new life among other animals, including humans. Coincidentally, that very day he meets a retired sheepdog and a disgruntled donkey, and together the three friends team up to start an adventure that will be a life-changing experience for all of them!