All placental mammals evolved from one mammal that survived the Chicxulub meteorite. It was nocturnal, so it saw with only two primary colors, red and blue. Only some apes, including us, have evolved a third primary color.
I used to have a dog that was red like a fox and I thought that was an odd coloration, until I walked her outside around dusk. Then, the colors start becoming more grayish, and she was invisible among the grass and bushes, whereas my black dog stood out because he was too dark to blend in until it became completely dark. So, maybe there is some logic in colors and camouflage that we don’t see, but works for the color-blind.
We get the ability to see blue and yellow from one-cell bacteria, who found it useful to know when the sun was directly above, (yellow-that could kill the bacteria) and when the sun was not (blue-safe to come to the surface of the water).
margueritem over 12 years ago
I’ve read that dogs do see some color.
SusanSunshine Premium Member over 12 years ago
Now, this one would be unintentionally funny if they’d sent it out to be colored.
PacoP – that made me laugh.
PICTO over 12 years ago
There seem to be some gray areas in his research.
T_Lexi over 12 years ago
That’s using the little gray cells…
Packratjohn Premium Member over 12 years ago
In a double rainbow, the colors are reversed – Really Gray, Darker Gray, etc….
RonaldDavis over 12 years ago
All placental mammals evolved from one mammal that survived the Chicxulub meteorite. It was nocturnal, so it saw with only two primary colors, red and blue. Only some apes, including us, have evolved a third primary color.
Nighthawks Premium Member over 12 years ago
..and Linda Gray
alan.gurka over 12 years ago
I used to have a dog that was red like a fox and I thought that was an odd coloration, until I walked her outside around dusk. Then, the colors start becoming more grayish, and she was invisible among the grass and bushes, whereas my black dog stood out because he was too dark to blend in until it became completely dark. So, maybe there is some logic in colors and camouflage that we don’t see, but works for the color-blind.
MissScarlet Premium Member over 12 years ago
Joel Grey
lummysdad over 12 years ago
Dogs also see yellow and blue. They just can’t see green and red.
Chewiek9 over 12 years ago
Dorian Grey
lummysdad over 12 years ago
We get the ability to see blue and yellow from one-cell bacteria, who found it useful to know when the sun was directly above, (yellow-that could kill the bacteria) and when the sun was not (blue-safe to come to the surface of the water).
alan.gurka over 12 years ago
My ex was a real B-I (female dog), but I don’t think she was color blind.
Nicole ♫ ⊱✿ ◕‿◕✿⊰♫ Premium Member over 12 years ago
Oh so that’s what 50 Shades of Gray is about!