Cats and dogs each have their own unique eye characteristics, and it's not accurate to simply say which eye is "better." Cats exhibit better vision at night or in dimly lit environments because their eyes contain a large number of retinal rod cells, which are extremely sensitive to low light, allowing them to see their surroundings clearly at night. Furthermore, cats have a relatively wider field of vision, with a binocular field of view reaching up to 200 degrees, which helps them hunt or escape potential dangers in the wild.
Dogs also have excellent night vision, about five times that of humans. Their eyes maintain good vision in both dark and bright environments. Furthermore, dogs excel in certain tasks, such as recognizing colors and details.
In terms of night vision, cats have a slight edge, about six times better than humans, while dogs have about five times better night vision. However, dogs maintain good vision in both bright and dark environments, a quality that cats cannot match.
