How do we know that dogs can see in black and white? They can't talk!?

Answer 1

Yes, they can...
I Insist!!!

Answer 2

There are ways of setting up experiments to determine if an animal can detect color differences. For example, first you train a dog to bark for a treat when he sees a picture of a cat. At first, you just make the picture black and you put it on a white background. Sometimes you put a picture of something else, say a bird, but you don't reward him for barking at a bird. Other times you simply put up a blank sheet with no picture. You don't reward him for barking at that, either. Soon he learns to bark at the black cat but not the black bird or the blank sheet.

Then you start changing the colors on him. If you put a red cat up against a white background, he'll still bark, even if he's colorblind, because red will show up as dark gray, which will stand out from a white background. However, if you put a red cat up against a green background and he's colorblind, he won't bark, because it will look like gray on gray. If you run this experiment with a sufficient number of dogs, and they all fail to bark at the red cat in front of the green background but they all bark at the red cat in front of the white background, you have your answer: they're colorblind. And you didn't even have to teach the dog to talk in order to figure it out!

Answer 3

At the back of your eye is the retina. It collects information and sends it to your brain. The retina contains cells called rods and cones, named after their shape.
I can't remember which way round it is, but one cell is sensitive to colour and one to monochrome; dogs have fewer colour receptors than we do.
Originally it was thought they didn't have any, hence the myth that dogs see in black and white. Scientists changed their minds recently when they found some colour receptors, just not many.
Absolute or near colour blindness is rare in people, but the horse trainer Monty Roberts is totally colour blind and his vision has been studied. He has great night vision and is very far sighted; also much more sensitive to movement than normally sighted people. All assets to a predator.

Answer 4

Dogs are color blind, every objects they see reflect to them is in black color and shapes. And something they identify the objects of certain colors by it smell ! This is what we known last time.

Now comes new research indicating that dogs can see in color.
The researchers concluded that dogs suffer from a type of colorblindness that in humans is called deuteranopia. Normal humans have three types of color receptors for red, green, and blue. Deuteranopes lack the green receptor, and thus (apparently) a red traffic light from a green one.

Dogs are red-green color blind. They see a brighter and less detailed world when compared to humans. Peripheral vision is better than humans (dogs see more of the world), but distance is not judged quite as well. Dogs excel at night vision and the detection of moving objects.

The dogs had no difficulty distinguishing colors at the opposite ends of the visible spectrum, such as red and blue, and they proved to be demons with blues in general, quickly learning to differentiate blue from violet. But they bombed at other colors, confusing greenish-yellow, orange, and red.

Answer 5

I personally believe dogs can talk. We just don't understand their language. I've heard my dog try to talk to me. No, I'm not crazy, it's different than a bark or a growl.

As far as the black & white thing, I have no clue.

Answer 6

It's been proven by scientists and people like that. FYI they can see some color, not just black or white. And my dog talks to me all the time, and trust me I'm not crazy. All that barking they do, especially if you're playing with them, and you tell them to stop and they give you this big bark. I love dogs they are so awesome and funny!!!!!!!!

Answer 7

How do you know they can't talk and we just cannot understand them. I wouldn't dwell on whether they can see in black and white or not because it's really not that important to know. Your best friend may see things more differently than you big deal, they can still be your best friend cant they?

Answer 8

Scientist, I guess. That is a good question. I heard they see in color, but I guess only dogs know, since they can't talk! Maybe we should call Doctor Dolittle, bet he can talk to them, then we can get the answer. LOL

Answer 9

Actually Dogs see Yellow & Blue too. I'm not sure how we know some kind of tests to see responses.

Answer 10

I'm sure they see in black and white. When i watched Rugrats at 3 When they showed what Spike was looking at, it was back and white. And did you know they hear 10 times louder than humans?
~*Alyssa*~

Answer 11

they don't! they see in shades of yellows,grrens and blues! this question has been asked before. Its all about the light receptors on the retina of the dogs eyes. They have rods and cones just like people. The rods are for seeing in dull light and the rods are for seeing colours. Dogs only have blue and yellow light receptor cones hence the shades of blue, yellow and green!