Cats have a special adaptation that allows them to see in the dark. They have a reflective layer in the back of their eyes called the tapetum lucidum, which reflects light back into the eye, allowing cats to see better in low light conditions. Cats also have more rods in their eyes than humans, which helps them to see better in dim light. Cats also have a wider field of vision than humans, and can detect movement more easily in the dark.