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Dogs See the World in Living Color
By Becky Lang | July 17, 2013 12:42 pm

dog-food.jpg

We humans may love to accessorize our pets with colored dishes, collars and toys, but the received wisdom is that dogs probably don’t care.

In earlier tests of color vision, scientists reported that color just wasn’t that crucial to dogs in their daily activities. However dogs have two types of cone photoreceptors in their retinas, meaning that they have about as much color vision as a color-blind human. And new research finds that they regularly rely on color cues.

With their two cone types dogs can see blues, greens and yellows, but not any reds and oranges. It has been thought that dogs rely more on brightness than color to differentiate objects.

More here - Discover Magazine

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