It's double trouble for Inspector Herchy Boal, when she picks up two litters of kittens. As with any unvaccinated kittens living outside, cat flu is a major risk. Animal Collection Officer Matt Brown rescues a cat on a telegraph pole. Jo assists with radical ear surgery on cat Ocean. In "Small Cat Diaries" we take a behind the scenes look at how the all-important title sequence is made.

• Jo Brand