The royals' love of animals, including Queen Elizabeth's love of corgis, the elite stable of racehorses that have brought in millions and their prize-winning dogs with specialist trainers. The documentary also looks back in time to the Royal Menagerie at the Tower of London. Founded by King John in the early 1200s, it was once home to more than 60 species - including a polar bear said to have fished in the Thames.
