It's A Bear's Life by Anna Wilson
Oscar and Parker live together much like any other boy and bear, until one day Oscar's rowdy games get too much for Parker and he sets off alone for a break at the Bear Hotel. But as he chats to the other bears Parker begins to realise that his life isn't so bad after all, and he misses his friend. If only he could get back home to Oscar!
All the warmth and reassurance of a classic story, with a light, humorous touch to appeal to a modern audience.