A long time ago, on the internet, there was an argument about a certain, ahem, clothing garment's true color.
1. Most humans can see everything in the visible spectrum aka all the colors of the rainbow.
2. But some people are colorblind, and this is how some of them see the world:
Around 8% of men are colorblind (this number is less than 1% for women), according to retinal neuroscientist Brian William Jones. People with protanopia, a common form of colorblindness, are missing a red cone, so that's why everything in the right picture looks olive.
Around 8% of men are colorblind (this number is less than 1% for women), according to retinal neuroscientist Brian William Jones. People with protanopia, a common form of colorblindness, are missing a red cone, so that's why everything in the right picture looks olive.
Around 8% of men are colorblind (this number is less than 1% for women), according to retinal neuroscientist Brian William Jones. People with protanopia, a common form of colorblindness, are missing a red cone, so that's why everything in the right picture looks olive.
3. Dogs can actually see color. The left image represents a human's vision while the right image is a dog's vision.
Dogs don't see in black and white. (That was a vicious rumor likely spread by jealous cats). That's because dogs are dichromatic, like most mammals (besides humans and other primates).
Dogs basically see color in a similar way to people who are colorblind because they're missing red cone receptors, according to ophthalmologist Jay Neitz.
Dogs don't see in black and white. (That was a vicious rumor likely spread by jealous cats). That's because dogs are dichromatic, like most mammals (besides humans and other primates).
Dogs basically see color in a similar way to people who are colorblind because they're missing red cone receptors, according to ophthalmologist Jay Neitz.
Dogs don't see in black and white. (That was a vicious rumor likely spread by jealous cats). That's because dogs are dichromatic, like most mammals (besides humans and other primates).
Dogs basically see color in a similar way to people who are colorblind because they're missing red cone receptors, according to ophthalmologist Jay Neitz.
4. The fuzzier, less vibrant picture is what your cat sees:
Some researchers think that cats may actually be trichromatic, but that felines still see the world in a similar way to dogs, according to research done by Nickolay Lamm and the Ophthalmology group at Penn Vet.
Some researchers think that cats may actually be trichromatic, but that felines still see the world in a similar way to dogs, according to research done by Nickolay Lamm and the Ophthalmology group at Penn Vet.
Some researchers think that cats may actually be trichromatic, but that felines still see the world in a similar way to dogs, according to research done by Nickolay Lamm and the Ophthalmology group at Penn Vet.
5. Cats have better night vision than humans, even though they can't see reds.
This is why most mammals are dichromatic, since mammals were nocturnal during the early stages of our evolution.
This is why most mammals are dichromatic, since mammals were nocturnal during the early stages of our evolution.
This is why most mammals are dichromatic, since mammals were nocturnal during the early stages of our evolution.
6. Bulls are also dichromatic, which means they can't see red either.
7. Humans evolved the ability to see red to possibly help with foraging.
8. Bees can see UV light.
9. Birds, reptiles, and fish can also see UV light.
10. Dinosaurs were able to see UV light too.
11. But it's the mantis shrimp that sees color in a completely different way than any other living creature in the world.
12. And there's even one documented case of a human being who can allegedly see 100 million colors.
