Do dogs really see in black and white?

Question

Seriously people say that dogs only see in black and white. how would they know?Give me a answer....some people say they do and some people say that they don't Help

Answer 1

All I have read on this subject, dogs do see in color. The color they see is not as good as humans. This must be true as I have watched my dog and know she does prefer some colors to others.

Answer 2

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

Answer 3

It's a common misconception that dogs can't see colour. In fact they can, but much less well than we can. They are thought to be 'red/green colour blind' like some humans are. As someone mentioned, they don't have such a need for developed eyesight - eyesight is our primary sense, but dogs rely more on olfaction (smell!).

Check out this article - I know Wikipedia isn't 100% reliable, but as far as I know this info is correct:
http://en.wikipedia.org/wiki/Dog#Sight

Chalice

Answer 4

It isn't official yet but scientists (and a lot of other people) think that dogs only see black white and Grey. Maybe Grey. Nothing is certain yet but these aren't guesses either. They are pretty accurate. Hope this helps!!

Answer 5

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Answer 6

"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...the thinking is that dogs only see blue and yellow because they have many less of the cones (color vision cells) than people."

Answer 7

Different animals use different senses, depending on what their survival dictates. Animals living deep in caves, for example, live in a world completely devoid of light, so their eyes did not have an environment in which that sense would have provided an advantage to their livelihood.

Similarly, an animal with a strong chemical sense (taste, smell) would not need strong eyesight (such as a dog).

The specifics of sight varies between species, however some basic principles are simple.

When light enters an eye, it strikes a structure in the back called the retina. The retina contains two types of nerve cells: rods, and cones. Rods contain a chemical that, upon contact with most light, generates an electrical signal that goes to the brain. Cones contain chemicals that, upon contact with lights of a specific color(s), send a series of electrical signal to the brain, the specific pattern of those signals being determined by the color of the light. In other words, cones are what allow your brain to understand color.

Rods are much more sensitive to low amounts of light. An animal that replaced all of its cones with rods would have very good vision, even in low amounts of light. Most nocturnal animals have no cones, but plenty of rods. They see better in the dark, but they can't see in color.

Cones need more light to generate an electrical signal strong enough for the brain to notice. An animal that replaced all of its rods with cones would have very sharp, detailed color vision, but would be blind in the dark. Most diurnal animals have only cones (birds are the most commonly cited animals).

Behind the retina is a structure known as the choroid. For most animals, this captures stray light that fails to strike a cell in the retina. Nocturnal animals have a slight evolutionary change that makes the choroid reflective, allowing light to bounce back into the eye. Because such light passes through the retina again, there's essentially a "second chance" to have that light detected. If the light passes through again, it travels out of the eye, which is why you sometimes see nocturnal animals with "shiny eyes." It's all that light being reflected back out.

You can always cause this effect in other animals by shining too much light for the choroid to absorb; in photography, we call this effect "red eye."

Answer 8

Actually they don't. Although many think they do. They see with a little less than half the color we see. They see as if it was twilight for us.

Answer 9

we are all black on the inside. to dogs...

but the actual black people are invisible to dogs, since they blend in more, and thats why dogs always bark at em since they sense something there that they cannot see

Answer 10

Yes they have conducted tests and Dogs only see in black and white. Remember to a dog, you are just a shadow, that they know feeds them. They do not know 'human' let alone comprehend it.