Every animal and person sees the world differently. Different types of animals see different colors and it is all due to the amount of color detecting cells, called cones, in their eyes. The number of cells determine the colors that animals can see. For example, humans have three cone cells which allow us to see all of the colors humans can detect.
Dogs
Dogs, however, only have two cone cells, which only pick up on blue and yellow ultraviolet light. The fewer cones animals have, the fewer colors that animals can see.
Geckos
Geckos have very powerful rod cells, which are used to help see in the dark. While humans have rod cells that allow us to see everything in the dark as grey, they are nowhere near as powerful as geckos, who can still detect color in the dark. Snails have terrible vision, they can not focus and can not make out colors.
Mantis Shrimp
The animal that can see the most colors is the Mantis shrimp, which has four times as many cones cells than humans do, meaning they have 12 cones cells.
The animals of the world all perceive color differently from the number of cone cells they have, leading to every creature seeing the world in a different way.
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