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2007-12-23 09:20:02 · 45 answers · asked by ((LOON)) 6 in Pets Dogs

45 answers

(PhD Physicist responds) In the human eye there are rods and cones that respond to light. The rods respond only to light levels, where as the different cones respond to different colors of light. Dogs have only rods, no cones. They can't see colors.

2007-12-23 09:28:29 · answer #1 · answered by Anonymous · 0 2

To some extent. The dog has a lower range of colour sensibility. There is a fable that dogs and horses are colour blind but I have had horses that only dislike red cars on the road but ignore other colours. I dont think anyone has established how intense a colour dogs really see but most scientists seem to agree that they do see some.

2007-12-23 10:14:59 · answer #2 · answered by Anonymous · 0 0

No. Dogs see in shades of black and white. Their sight is monochromatic. Bright colors appear as bright shades of grey and dark colors appear as dark grey. Some very small amounts of color recognition has been reported by some studies, but the anatomy of the dogs' eyes seem to show this is not possible.
They do see 3 dimensions, not one.
Seeing eye dogs are trained to look for traffic lights when their owner approaches an intersection. They know when the traffic light is red, yellow or green because of the position of the illuminated light, not the color.

2007-12-23 09:44:09 · answer #3 · answered by Scooter 3 · 0 0

While dogs do not have the same colour vision as humans, they are able to tell yellow from blue. Like a human with red-green colour-blindness, they are unable to tell the difference between red and green.

The reason for this limited range, in both the colour-blind human and the dog, is that there are only two kinds of colour receptors in the retinas of their eyes. While most humans have three kinds of colour cells, with three different receptor molecules sensitive to blue, greenish-yellow, and red, dogs only have receptors for yellow and greenish-blue.

Canine eyes also lack another human trait: the fovea, an area especially dense with detail-sensing cells. As a result, their detail vision is not as good as ours. But they make up for this by having much better night vision and greater sensitivity to movement.

2007-12-23 09:24:50 · answer #4 · answered by Anonymous · 2 1

Most people think they see in black and white, but they actually see in colour but not as we know it. The colour is a lot lighter than humans see it, so they need to make up for it in other ways such as acute hearing. Also people think dogs noses are wet when they feel well and dry when they feel ill, but it's actuallt wet to help them smell better.

2007-12-23 09:24:06 · answer #5 · answered by heartshapedglasses 4 · 2 1

They see red & blue, they do not see the yellow portion of the color spectrum. So the colors green yellow and orange all look the same.
Need to remember that if we remove one of the three from the spectrum nearly all colors will appear different.

2007-12-23 09:54:17 · answer #6 · answered by tom l 6 · 0 0

Apparently not, but who's ever gonna prove that until dogs learn to speak human - or humans learn to speak dog?
I reckon they see, hear, smell, know and understand a damn sight more than us personally!!!

2007-12-23 11:10:27 · answer #7 · answered by Anonymous · 0 0

For a detailed analysis of dog vision, go to http://psychlops.psy.uconn.edu/eric/class/dogvision.html and scroll down to color vision. The short answer is yes, dogs can see some colors, but they don't use color vision to the extent that humans do.

2007-12-23 09:25:39 · answer #8 · answered by TitoBob 7 · 1 1

Dogs do see colors, but not to the degree that humans can. Basically, they have dichromatic color vision - similar to that of a human with red-green color-blindness (see http://www.uwsp.edu/psych/dog/LA/DrP4.htm) - whereas 'normal' humans have a trichromatic system; consisting of three types of cones that allow us to see a range of colors that are a mix of red, blue, and green pigments. For a detailed discussion, see http://www.mcw.edu/cellbio/colorvision/colorvision.pdf
Also, see http://www.puplife.com/dogcaretips/howdogsseecolors.html for an example of testing color vision in dogs.

2007-12-23 09:24:01 · answer #9 · answered by memberrw 3 · 8 1

I read that they only saw in black and white, but how on earth anyone found out I'll never know!

2007-12-23 10:27:53 · answer #10 · answered by floppity 7 · 0 0

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