Shades of blue, indigo and purple, but red and green for the spectrum of high saturation colors are not unique sensibility. Dr. Brooks research shows that the dog is dark red, and green for the dog is white, the green lawn in the dog appears to be a white lawn. Dogs dog eyes retinal light receiving device – omentum –
Containing large amounts of columnar cells, columnar cells contribute to the dark vision and visual moving object detection. Retinal cells in another form as vertebral cells, the main function of the vertebral-like cells is to distinguish colors and to distinguish between fine. Dog extra layer of the retina choroid layer (tapetum lucidum), there is a strong reflection, but also can
Increase the dog’s night vision. Because the light entering the eye will impact on the light receiving retinal device (photoreceptor), but may also penetrate the retina mistakes; but dogs, the result of choroidal layer, the impact is not lost even if the light light receiving device , still reflecting back on the retina, resulting in so-called second sight. The choroid