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January 4, 2013
Q. When people go out to buy their dog a toy, what mistake do they commonly make?
A. They purchase popular toy colors like red or safety orange (the bright orange red of traffic cones or safety vests) that are difficult for dogs to see, says psychologist Stanley Coren in “Do Dogs Dream? Nearly Everything Your Dog Wants You to Know.” Tests show dogs have trouble seeing red, which can appear to them as dark brownish gray or even black. Not that dogs are color-blind, as many people believe, but they are “color-challenged.” We humans have three different kinds of light-catching cones affording us our full range of color vision; dogs have only two.
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