A biography of the provocative nineteenth-century English naturalist. Brilliant, hard-working, and immensely productive, the naturalist Richard Owen was a great ambassador for science and played an outsized role in shaping London's Natural History Museum. Still, Owen was a provocative bully, accused of plagiarism, and the only man Charles Darwin claimed to hate since Owen staunchly opposed his ideas about natural selection despite sharing similar views himself. This biography gives an account of Owen's life and work and offers some speculation about the reasons behind his controversial behavior and strained relationships.