Are dogs color-blind?

Question

i'm just wondering

Answer 1

nope. Heller!

Answer 2

No, they see color. They just don't see as many colors as we do.

http://www.puplife.com/dogcaretips/howdogsseecolors.html

These experiments showed that dogs do see color, but in a more limited range than that seen by normal humans, who see the rainbow of colors described by "VIBGYOR": Violet, Indigo, Blue, Green, Yellow, Orange, and Red (plus hundreds of variations on these shades). Instead, dogs see "VIBYYYR" (Violet, Indigo, Blue, Yellow, Yellow, Yellow, and Red). The colors Green, Yellow, and Orange all look alike to dogs; but look different from Red and different from the various Blues and Purples. Dogs are very good at telling different shades of VIB apart. Finally, Blue-Green looks White to dogs.

The simple explanation for these differences in color vision is this. The retinas of normal humans have three (3) types of color receptors, called "cones". Each cone type is particularly sensitive to light of a narrow limit within the entire VIBGYOR range. That means that three different "cone lines" of communication run back to the visual part of the brain, which then compares the weight of the signals coming in from each of cone "line". Different weights produce a perception of different colors. In dogs (and in "green-blind" humans), there are only two (2) types of cones, so there is less basis for comparison by the brain, and thus the perceived color range is more limited. In sum, dog color vision is "color-limited", not "color-blind".

Answer 3

Yes they are red-green color blind, meaning they see in shades of blue-yellow-black-white and grey. Some are more color-blind and see in more of shades of grey with some color.

They have less rods and cones in their eyes then humans although some people are also red-green color blind for the same reason.

Answer 4

No, they are not supposed to be color blind but they see colors a bit dimmer, as they have both retinal cones and rods. But we can't check how it feels to see through a dog's eye.

Answer 5

I think they are said to be color-blind, yes. But I'd swear to you my dog isn't- I have three identical sofa cushions in different colors and he inevitably goes for my favorite red one!

Answer 6

Yes they are. They only see in black and white. I read some of the answers you have recieved and someone said that cats see in color, sorry but they are wrong.

Answer 7

Yes their eyes can't see the different colors.

Answer 8

No, mine is not -- she will always pick her favorite color toys. Even if I have 5 of the exact same toy, she will always go for 'her' color.

Answer 9

Well go ask a dog

Answer 10

yes dogs can only see in B & W

Answer 11

Only some.