They say dogs see in black and white how do they know if you cant actually see through them ourselvs?

Question

They say dogs see in black and white how do they know if you cant actually see through them ourselvs?

Answer 1

By food testing. Here's how .

First seven or eight boxes are made of exactly the same size and material . The boxes are then painted different colors , of the same density of color - -- that means if photographed in black and white , they all look exactly alike .

The dogs favorite food is always put in the same color box . The boxes are put in a different order each time . Some of the food is smeared in the other boxes , just for the smell .

If the food is in the red box , and every time the dog is released , he heads right for the red , it means that he can distinguish red .

When tested over and over but the dog is always baffeled , it shows that he can't distinguish colors . When this test is made on many dogs , it shows that no dog can distinguish colors .

I hope you understand my explanation .

Answer 2

Dogs are said to have dichromatic vision,  they can see only part of the range of colors in the visual spectrum of light wavelengths. Humans have trichomatic vision, meaning that they can see the whole spectrum. Dogs probably lack the ability to see the range of colors from green to red. This means that they see in shades of yellow and blue primarily, if the theory is correct. Since it is impossible to ask them, it is not possible to say that they see these colors in the same hues that a human would. Whether or not the ability to see some color is important to dogs or not is hard to say.

Answer 3

They probably don't, but we can only assume, not matter how absurd the possibility.

Answer 4

We know because of the structure of the eye and the region of the brain the dog uses for visual reception.  Science always has an answer for what appears to be a dilemma.  It is simply a matter on cones in the eye, the number and type.

http://www.nhm.org/exhibitions/dogs/form...

http://www.cvm.uiuc.edu/petcolumns/showa...

Answer 5

By scientists studying the cones and make up of dead dog's eyeballs.

Sick, but true!

Answer 6

A common experiment would be something like this:

Using a dark blue bowl, the dog is fed every day. Another bowl, black in color sits next to the dark blue bowl. Thier positions are random. Pretty soon, the dog learns that when the lab technician grabs the bowl, the food arrives shortly after.  The dog gets excited and begins to salivate whenever the assistant grabs the bowl to feed it.

Now, the pattern is changed.  The lab assistant will sometimes grab the black bowl instead of the blue bowl.  When the assistant grabs the black bowl, the dog has the same reaction...it salivates.  However, the assistant never puts food in the black bowl.  He always uses the blue bowl.  The dog is confused.  It can't tell the difference.

The experiment is repeated, but this time, a black bowl and a white bowl is used.  This time, the dog goes to the correct bowl every time...it knows the difference between black and white, but can't distingish between blue and black.  Thus, it's color-blind.

Variations of this experiment have been carried out on every species from cockroaches to hummingbirds to honey bees.