Molly is the world’s first trained cat detection dog. Her job is to rescue missing moggies. We had been looking for a dog with a particular temperament and intelligence to join our team of pet detectives for 18 months. We had scouts out and had spoken to the country’s top breeders. We needed a quick learner; one small enough to fit into the nooks and crannies cats hide in. Mostly, we needed a dog with no desire whatsoever to chase cats.