CAN DOGS SEE IN COLOUR?
It’s not true that dogs see in black and white only! While dogs don’t have the same color vision as us, they are able to tell yellow from blue. Like a human with red-green colour-blindness, they are unable to tell the difference between red and green.
The reason for this limited range in both the colour-blind human and the dog, is that there are only two kinds of colour receptors in the retinas of their eyes. While most humans have three kinds of colour cells, with three different receptor molecules sensitive to blue, greenish-yellow, and red, dogs only have receptors for yellow and greenish-blue.
Canine eyes also lack another human trait: the fovea, an area especially dense with detail-sensing cells. As a result, their detail vision is not as good as ours. But they make up for this by having much better night vision and greater sensitivity to movement.
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