In a new exhibition exploring the historic Royal Menagerie, visitors can gawp at the 60 species - ranging from lions and monkeys, to alligators and kangaroos - that were once housed inside the Tower's walls. Stand-out stars include a polar bear who fished in the Thames for his lunch, the dog-faced baboon who was fond of smoking a pipe, and a 19th-century family of fearsome lions named Fanny, Miss Fanny, Miss Fanny Howe and Miss Howe. Catchy.