Can Dogs See Colors?

No.Man's best friend is colorblind, but, fortunately, his survival does not depend upon the ability to see colors. His keen sense of smell compensates（补偿）for his inability to see colors, and enables him to differentiate between things.Extensive scientific testing on dogs supports the conclusion that they live in a colorless world. The testing done primarily focused on the dogs蒺re-sponses to colors for food. Dogs could not tell the difference between one col-or, a signal for food, and oth…