Inspector Herchy Boal rushes several kittens to the vet with potentially-fatal cat flu, Jo helps give a hearing test to four blue-eyed white kittens, and we find out why cats meow. Inspector Keira Benham attempts to rescue a heavily-pregnant feral cat, and Jo meets two black rescue cats that have a potential new owner. Inspector Paul Heaton rescues a cat abandoned when the owners moved house, and from YouTube, we see another amazing rescue from across the world.

• Jo Brand