why r dogs colour blind??

Question

why r dogs colour blind its not fair i just wanna know y its strange!!!

Answer 1

Recent scientific research indicates that dogs aren't completely color blind. But dogs apparently lack ability to distinguish green from red.

Answer 2

Dogs see two diiferent colours (blue and green) whereas humans see three (green, blue and red). All the colours we see are a combination of these primary colours so whilst a god sees colour it is a different view to ours. The reason they only see two colours is that they only have 2 types of cone cell in the retina rather than our 3 types. Each type of cone cell responds to a different colour (wavelength) of light.
Dogs see better than us in the dark because they have a greater proportion of rod cells than humans. Rod cells detect light intenisty rather than wavelength which is why they are effective in dark conditions.

Answer 3

Dogs do not have the same rods and cones so they do not see the same spectrum as do people. See the chart below for a "dog's view".

You can see that dogs do not see just black and white. They do see better at night than humans.

Answer 4

I like to think that they are not, and until a dog tells me otherwise I will continue to do so.
That's Fair..

Answer 5

They aren't color blind. Read this article on canine vison
http://www.uwsp.edu/psych/dog/LA/DrP4.htm

Answer 6

Do we know that for a real fact? I dont know any dog that has told someone that! LOL

Answer 7

This sounds like a question for a vet.

Answer 8

No cone shaped receptors in their retinas.

Answer 9

Because that's just how they were born

Answer 10

Because!