The term “cat nap” for a short relaxation refers to the cat’s tendency to go to sleep for a short period. While asleep, Cats experience quick periods of rapid eye motion sleep typically accompanied by muscle twitches, which suggests they’re dreaming. This is partly the end result of cat eyes having a tapetum lucidum, which reflects any gentle that passes via the retina back into the eye, thereby growing the attention’s sensitivity to dim gentle. The domestic cat has slit pupils, which allow it to focus bright mild with out chromatic aberration. At low gentle, a cat’s pupils broaden to cover many of the exposed floor of its eyes.