Thomas Henry Huxley PC PRS FLS (; 4 May 1825 – 29 June 1895) was an English biologist specialising in comparative anatomy. He is known as “Darwin’s Bulldog” for his advocacy of Charles Darwin‘s theory of evolution.
Huxley’s famous debate in 1860 with Samuel Wilberforce was a key moment in the wider acceptance of evolution and in his own career. Huxley had been planning to leave Oxford on the previous day, but, after an encounter with Robert Chambers, the author of Vestiges, he changed his mind and decided to join the debate. Wilberforce was coached by Richard Owen, against whom Huxley also debated about whether humans were closely related to apes.