Is Fido Colorblind?

Most people think canines see in black and white. However, this may not be the case. Recent research shows that dogs have dichromatic vision, which means they can see only a portion of the range of colors in the visual spectrum of light wavelengths. They can't see in shades from red to green but can see in shades of blue and yellow. Humans have trichromatic vision, which enables us to see the entire color spectrum.
But being colorblind may have its advantages. Dogs see better in dimmer light than we can. The center of the dog's retina is composed of rod cells. This helps percieve shades of gray. Human retina are mainly made of cone cells. This enables us to percieve color but not see in the dark. Rod cells need less light to funstion than cone cells.
Dog eyes can detect motion better than ours can, too. But this has its disadvantages. Pups can't focus as well on the shape of objects. Compared to humans, dogs have a visual acuity of 20/75. With normal vision Bowser can see 20 feet, which is like our 75.
Even if your beloved pup can't see if your blouse is brown or black, you know he'll be able to stare into your heart with 100% accuracy.