Felix is perfectly happy during the day. He and his mum share comfortable, contented times together. But in the night, the Worrier comes to visit - a small yellow alien-creature who devises all sorts of worries for Felix - and Felix's 'clouds of happiness' disappear. The solution comes when Felix is given a puppy for his birthday and the Worrier doesn't like dogs! Felix and puppy curl up together ' on clouds of happiness' again. Wells' wonderful cuddly pictures of guinea-pig mum and son and the little Westie dog are a treat and should encourage others beset by the Worrier. And if a real dog isn't a possibility, how about a toy substitute for a worried child?