Well, the information I found tells me that
dogs see colors different from us and that they do
not see the color red. The color vision is
controlled by cells in the retina of the eye
called cones. The dog does have cone cells
in its retina, that means they can see color.
However, the cones make up only a small percent of
the cells in the central area of the retina of the
dog (less than 10%). In human, the central area
contains nearly 100% cones. Experiments on the
dog's eye show that the dog can probably see
shades of blue, yellow and gray. Since it
cannot see shades of red, the dog is said to have
dichromatic (two color) vision compared to
people who have trichromatic (three color)
vision and can see the full spectrum of colors.
For a dog, this is probably not important.
They can use other visual clues such as
brightness and position of objects, and
their other senses like smel, taste and
Dogs also don't see fine details as well as
humans. We usually see 20/20, but dogs see
about 20/80. That's four times blurrier! Dogs
do see better at night, though, and they also see
moving things better than we do. That is why a dog
can spot a moving ball that you throw even if it
is in the woods. He can tell exactly where it
Hope this helps answering your
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