My little cat, Bella, is fast asleep, curled in a ball on the sofa. Suddenly, she wakes up. A furry, stripey worm has appeared between her back paws and appears to be attacking her from beneath. This won’t do at all! She clutches at it, grabbing it between her front paws, whizzing round in circles as it tries to get the better of her. Her claws make little popping noises in the sofa cushions as she chases it round and round – playing with her tail in a grey and furry whirl of pure joy.