Dogs’ colour vision

“Dogs’ colour vision is similar to that of colour-blind humans. The paired photos show how a normal human and a dog would perceive the same image; the colours bars compare the complete visual spectrums of the two species. To a dog, each of the paired images would be indistinguishable from the other.”

(From: “The truth about dogs” by S. Budiansky; Penguin Books : a very very interesting book)

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