Are cats colorblind?

No, is the answer, however, his color vision is quite poor. In the first half of this century, scientists were sure that cats were completely colorblind, and one expert rephrased a popular saying with the words: “Day and night, all cats see gray.” That was the persistent attitude in the 1940s, however more measured research has been achieved in recent decades and it is now recognized that cats can choose certain colors, but apparently not very delicately.

The reason previous experiments did not show the existence of cat color vision was that in discrimination tests cats were quick to pick up subtle differences in the gray stage of colors and then refused to give up these cues when they were pitted against two colors of exactly the same degree of gray. Therefore, the tests returned negative results. Using more advanced techniques, recent field studies have been able to show that cats can distinguish between red and green, red and blue, red and gray, green and blue, green and gray, blue and gray, yellow and blue, and yellow and grey. Whether they can distinguish between other color pairs is still in question. For example, one expert thinks he can also tell the difference between red and yellow, but other experts disagree.

Whatever the outcome of these investigations, one point is certain: color is not as crucial in cats’ lives as it is in ours. Your eyes are much more attuned to seeing in low light, where they only need 1/6 of the light we need to capture the same details of movement and shape.

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