Dogs can see colors but have difficulty discriminating between red and green. The link below shows a dog taking a vision test. The dog is trained to press a touch screen showing a color that is different from the other colors - if the dog can see it. If they got it right they were rewarded with a treat.
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Yes by examining the eyeball is correct.
Our eyes have rods and cones. The cones are for color, humans have 3 kinds (red, yellow, and blue), but dogs only have cones for yellow and blue, as such red does not look like red and actually tends to look more like a gray or greenish gray.
http://pet-health.knoji.com/what-colors-…
Our eyes have rods and cones. The cones are for color, humans have 3 kinds (red, yellow, and blue), but dogs only have cones for yellow and blue, as such red does not look like red and actually tends to look more like a gray or greenish gray.
http://pet-health.knoji.com/what-colors-…
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Scientists know that they're not.
Google it. You'll find that dogs and cats have both rods and cones in their eyes, one sees in low light, one sees with color. They just have fewer color ones than we do. Birds have more than we do.
Google it. You'll find that dogs and cats have both rods and cones in their eyes, one sees in low light, one sees with color. They just have fewer color ones than we do. Birds have more than we do.
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I second the first answer:
http://www.psychologytoday.com/blog/cani…
http://www.psychologytoday.com/blog/cani…
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By DISSECTING eyeballs...to the lack of structures!