The document discusses the history of animal ethics and legislation from antiquity to modern times. Some key events include the first known animal protection law passing in Ireland in 1635, philosopher Jeremy Bentham arguing for better treatment of animals in 1780, and the development of the Three Rs principles in the 20th century to promote more humane animal research. The document also examines the rise of animal experimentation and vivisection from the Renaissance onward and the modern animal rights movement starting in the late 20th century.