Is this true?

Question

are dogs really colour blind and are dogs eyes only brown

Answer 1

Dogs can see in much dimmer light than humans. This is because the central portion of a dog's retina is composed primarily of rod cells that "see" in shades of gray while human central retinas have primarily cone cells that perceive color. The rods need much less light to function than cones do.

Dogs can detect motion better than humans can.

Dogs can see flickering light better than humans. The only significance to this appears to be that dogs may see television as a series of moving frames rather than as a continuous scene.

Dogs do not have the ability to focus as well on the shape of objects (their visual acuity is lower). An object a human can see clearly may appear to be blurred to a dog looking at it from the same distance. A rough estimate is that dogs have about 20/75 vision. This means that they can see at 20 feet what a normal human could see clearly at 75 feet.

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 sprectrum. 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.

Also consider the perspective that dogs see the world from. A dog with its eyes about 12 inches off the ground certainly sees the world a different way than a human with eyes about 48 inches off the ground like many 5th graders.

As humans we tend to think of dog's visual capabilities as inferior to ours. It is different but it may suit their needs better than possessing accurate color vision would.

Answer 2

Hi lmogen, I think dogs see somekind of color. When i buy dog toys for them, i put them in the floor and let them choice the one that each wants. It's always the bright colors they pick. How about a bull, they charge the color red.

Dogs can have different color eye... green, blue, gold and brown. i have a dog who have 2 different color eyes. One is a pretty blue that go's right threw you. And his other eye was green when i first got him. The color changed to a brown with a blue dot in his eye ball.

Clowmy

Answer 3

There really is no way of telling if a dog is color blind unless your the dog. And they're not talking! I've seen blue eyed dogs and yellow eyed dogs. So nope, Not true!

Answer 4

If dogs are color blind somebody needed to tell my ex wife's doberman that. You did not go out in the yard wearing a red shirt. She did not care who you were she'd nail you. Any other color she didn't mind it was just the color red.
As far as their eyes being only brown the answer to that is no!

Answer 5

Dogs are not color blind. Their eyes see color a little differently than we do, according to studies. Many breeds of dogs, like the Australian Shepherd have blue eyes.

Answer 6

Not exactly , dogs aren't colorblind persay but they see colors very differently.
Read here for a study which was done that explains it.

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

As for their eye color, ask anyone who's owned a wolf or a husky or even some german Sheppard's, and you'll find may have had dogs with white irises.
Don't mistake this for albino-ism as albinos often have orange or even red eyes.

Answer 7

i think the color blind issue is yes. but no not all dogs eyes are brown, some are black and some are blue (huskies, etc.) some are even yellow or gold.

Answer 8

Dogs see mostly in grey, blue and yellow tones. And no, some dogs have different coloured eyes. Eg. some huskies have blue eyes and my boyfriendss husky has stunning green eyes.

Answer 9

Dogs aren't colourblind, they can see blues, greens and yellows. Dogs can have all types of different eye colours too.

Answer 10

here is a link about the colour blindness question you asked: http://www.straightdope.com/classics/a2_004.html
As for dogs having brown eyes, check out his picture: http://img.photobucket.com/albums/v329/dizzywater/IMG_0511.jpg