What did galen do instead of dissect human bodies?

Instead of dissecting human bodies, Galen conducted his studies on animals, particularly pigs and monkeys, to understand anatomy and physiology. He believed that animal anatomy could provide insights into human anatomy, despite the differences. Additionally, Galen relied on the writings of earlier anatomists and his observations from surgeries on gladiators to develop his theories about the human body. His work laid the foundation for medical knowledge for many centuries.