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2. Are Dogs Colorblind?

Because dogs do have one fewer cone than humans do, they would fit the human definition of colorblindness. If a human saw the world as dogs do, they'd be red-green colorblind. However, this is the normal state for dogs. Dogs do not seem to experience colorblindness like humans do, as there has never been a recorded case of a dog with fewer color receptors than normal.

Red-green colorblindness test kowalska-art / Getty Images
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