Theodore H. Bullock was a scientist who studied animals and their behavior. He studied the brains of different animals, and what they were like inside their heads. He looked at the connections between the neurons, or tiny cells that make up our brains, and how they interacted with each other. He also studied how animals responded to changes in their environment, and how that influenced their behavior. Bullock's work has helped us to better understand the behavior of many different animal species.