The Jack Russell is a small terrier. Like the John Dory (fish), the breed is an animal named in the manner of a human being. This can help with the sometimes difficult pet naming process, as the dog may simply be named Jack (indeed, 87% of Jack Russells in the world are named this way). The breed is perfect for catching small animals such as rats and rabbits and is an expert tunneller (it is a little known fact that, during WWII, an elite band of Jack Russells was dropped behind enemy lines by the British Army to help POWs to escape). Much prized for its tenaciousness, this fearless little warrior will take on other dogs far greater in size at the drop of a hat so care should always be exercised when walking in the park. The Jack Russell is very intelligent and, if well-trained, can perform a number of household duties such as answering the telephone and dusting. The breed hit the headlines in 1966 when a Jack Russell named Pickles found the previously stolen soccer World Cup in a hedge in South Norwood using a metal detector.