Harry Horse: 4 books

Grandfather is off on an expedition to the North Pole to find the Last Polar Bears and with him goes Roo - a dog of character and strong views. The intrepid explorers set sail on the good ship Unsinkable and embark on the adventure of a lifetime. Eccentric, moving and very funny, their story is told through a series of extraordinary letters.

On holiday in Saltbottle, Grandfather and Roo discover the Unsinkable, the boat which took them to the North Pole in the first book, lying in a sadly dilapidated state and up for sale. At the auction, the short-sighted auctioneer accidentally sellsthe boat to Roo - sold to the old lady in the brown...

Having seen a depressed polar bear in the zoo, Grandfather and his dog, Roo, set off on an expedition to find the last polar bears. After a treacherous journey on HMS Unsinkable, they reach Walrus Bay and the fun really starts. Howling wolves and terible snowstorms delay the start of their trek and...

It's Little Rabbit's birthday and, as a treat, the whole family go to the Rabbitworld Theme Park. Little Rabbit thinks he's so grown-up that he doesn't need to stay with his Mama. However, he soon realises that he is just a little rabbit after all and does need looking after.