What colours can a dog see?

Behavioral experiments have demonstrated color
vision in many animals and several general trends emerge. Old World primates
(great apes, macaque monkeys) have color vision, based upon three different
cone types, very similar to most humans. Mammals, that are not primates, have
only two cone types and their color vision is dichromatic, e.g. they can
discriminate between long and short wavelengths (dogs, cats, horses). One
percent of humans are also dichromatic. —- from here
more info on the page from different scientists.
Color of page makes it hard to read though.

my dog could see the colours of love and food.
she was just about blind at 16…..but could feel me.

“Neitz, Geist and Jacobs researched in 1989 the color vision of domestic dogs and found the following facts:

1. Dogs have two different color receptors in their eyes and therefore are dichromats.
2. One color receptor peaks at the blue-violet range, the other at the yellow-green range.
3. Conclusion: Dogs are green-blind which is one form of red-green color blindness also called deuteranopia.

This results were support by later researches of Jacobs with colleagues in 1993 and Miller and Murphy in 1995. ”

Source

My dog definitely saw pink. He always choose pink leashes and collars.

Thank you for making me curious. I found these current studies. What fun ! Thanks again.

The results from the study tells us that dogs do see some colors: violet, indigo, blue, yellow and red. They are especially adept at differentiating between shades of violet, indigo, and blue. Who knew!! “The colors Green, Yellow, and Orange all look alike to dogs; but look different from Red and different from various Blues and Purples.” http://blog.colornoodle.com/2009/03/02/what-colors-can-my-dog-see.aspx

http://www.pawnation.com/2010/01/15/can-dogs-see-in-color/

http://www.psychologytoday.com/blog/canine-corner/200810/can-dogs-see-colors