can cows identify colour?
481506
"A popular misconception about cattle (primarily bulls) is that they are enraged by the colour red. This is incorrect, as cattle are mostly colour-blind"
214035
If there is pus or blood in milk, the animal could have mastitis.  You can buy tests to see if the cow has mastitis, and if it does, you can treat it easily, as long as you catch it as soon as the cow contracts it.
189212
Yes.\n\nThis site talks about blood groups in cattle:\n\n"Eleven blood groups have been recognised in cattle - some are simple with only one antigen presented, whilst others are more complicated"\n\nWhat, you thought humans would be unique? =)
823692
Have a look here:\nhttp://www.bbc.co.uk/nature/animals/features/287feature2.shtml\n\nAnd here:\nhttp://users.aber.ac.uk/sac5/characteristics.htm
60350
I have looked and seen.\nThe blood of most animals you are familiar with is red.\n\nYou are most familiar with oxygenated blood which is bright red. When you cut yourself the blood that leaks out is in contact with oxygen in the air and becomes oxygenated.\n\nDeoxygenated blood is a darker red.\nThe deoxygenated blood in veins is NOT visible just by looking at your skin. What you are seeing is the colour of deoxygenated blood viewed through the layers of tissue of the vein walls.\n\n'Blue blood' does not exist except for convenience in diagrams to distinguish it from the oxygenated blood in other parts of the diagram. The other common misconception is the use of 'blue blood' to describe aristocracy - cut of their heads and there is lots of bright red blood!\n\nHOWEVER - there ARE some animals (but none you are likely to have heard of) that do have blue blood - the oxygen is carried on copper rather than on iron.
728342
Different animals see different ranges of color.  Scientists can determine this largely by looking at the structure of the eye, to understand what light waves a structure responds to.
451973
Biology will tell you no, but think about this...\n\nI have always wondered, what if the color you see as yellow is the color I see as green?  See, we are all taught colors, so if I was seeing "green" but my parents had always told me it was "yellow,"  I would learn to call it yellow.  So colors could theoretically be relative.  We are taught that they sky is blue, but if we had always been told that they sky was orange, we would think the color blue was called orange.  See what I mean?\n\nThere is probably some biologist out there who can find some way to argue with me about wavelengths of light and ours eyes and something else to try to prove that we all see the same color, but for arguments sake, I like the theoretical argument better.
640682
Wrong!\n\nSee:\n\nhttp://www.abc.net.au/rn/science/ss/stories/s1330617.htm\n\neg:\n\n"Now since the dog’s eye is tuned for night, at night with low intensity levels you really don’t need very much in the way of colour. But of course dogs also hunt during the day, so what evolution has done is, you know, everybody gets the feeling that dogs are colour blind and somehow or other they see just in shades of grey. Well that’s not the way the game is set up. Dogs actually do have some colour vision, it’s just they have less colour vision that we do and they see fewer colours and they are probably a lot weaker than ours. So the dog sees the world in shades of blues and greys and oranges and yellows and the darker yellows might sort of fade down to something which we might call a brown, but they don’t see the oranges or the reds, they don’t see the greens and that sort of thing.\n\nIt drives me absolutely crazy. Right now the favourite colour for dog toys is red or that bright safety orange which you see in traffic columns and safety vests and that sort of thing. Well the thing is - to the dog’s eye that red is the same colour as the grass which the toy is supposed to land on, the only difference is that it’ll appear to be a little bit darker so it’ll be a slightly more brownish yellow than the yellow of the grass. So you buy this new toy and you throw it and Lassie goes tooling past it and you say to yourself, My God, my dog’s become an idiot or it’s just being obstreperous. Well no, the colour was there to catch the human eye: it’s absolutely useless with an dog’s eye. You’d be better off with blacks and whites."\n\nMore on the page, about dog senses.
430794
scent and color. Insects see color.
321723
Hmmmmmm. Friend. I'm not sure, that's a good question. I think I'd use a black sheep. I am thinking it'd have more color! LOL! see ya later alligator!
146680
Cows aren't paint. They dont take the grass in and mix it up to produce milk and butter. Those things are produced by their body. The color of things is determined by what material makes it up and what "state" it's in. If something "clear" like an oxygen atom, combines with something that's a gray color like an iron atom, it produces a new thing with a new color called rust. \n\nMilk and butter are far more complex atoms than iron and oxygen. So they reflect the color of what they are. \n\nI would say your grandpa is a pretty funny guy. Tell him hello from OiVey.
563574
Would you believe that bulls are colorblind? Well, they are. The bulls that are used in Bullfighting are bred very carefully to be very aggressive (that means that they get angry pretty easily). When they are three years old, they are put through some tests to see how aggressive they are, and the most aggressive bulls are brought to the bullfight. When they see the matador waving his cloth (remember that they are colorblind, so they only see a dark grey cloth), they charge at it! Also, in the beginning of the bullfight, the matador stabs the bull in the back of it's neck with swords. This makes the bull especially angry, but the matador does that so the bull can't lift it's head (the swords cut the muscles that lift the bulls head). \n\nA red cloth is used for a couple of reasons- it's pretty for the people to see, and if any blood gets on it, it is hard to see. If you ever watch a bullfight, you'll see that the other side of the cloth is yellow. This is just to make it more decorative. The bull will also charge this side of the cloth. \n\nSo the reason bulls go after red cloth is not because it's red, but because they think it's teasing them.
699149
I would say becasuse you can use cows as a general term. You can point to a herd and say "look at all the cows." You can't say "Look at all the bulls" unless they actually are a herd of uncasterated bovines :)
42248
Bulls are colour blind, and therefore are not irritated at all simply by the colour red at a bullfight. What they are really attracted to is the waving object which catches their side vision and activates their hunting instinct.  One theory about why red is chosen is that the scarves were actually white (or a more natural linen colour), but since they were reused often (and usually covered in blood by the end of it), they stained red.  Thus, people started just dying the cloth red from the begining.
904667
No. But that does NOT mean bulls are colorblind. Many mammals cannot tell the difference between red and green, but do see more than black and white.\n\nMammals in general have poorer color vision than birds and reptiles. This is believed to be because they were nocturnal scavengers early on in evolution and eventually lost 2 of the 4 types of cells in the eye that allow us to see color. These are known as cone cells.\n\nSome primates, such as humans, have regained a 3rd type of cone cell. Thus allowing them to tell the difference between red and green. Being that this is an evolutionary new cone, it is no surprise that this newer color distinction is more commonly lost than the older blue and yellow.
820767
There is no real way of telling them apart, they are what you call sexually monomorphic and monochromatic, meaning they have no physical difference or difference in color. The females are slightly larger than the males, but you would only really be able to tell them apart if you had both in your hands. Under a microscope with some entomological knowlegde, you would be able to see the genetalia, but with the naked eye, it is quite difficult.\nThe best way to tell would be to find a pair in copulation, the one on the bottom is the female and the one on the top is the male. Seeing this will also give you an idea of the size of a female compared to the male....but thats about all....\n\nHope this helps!
330982
I think so! Visit: http://www.bbc.co.uk/nature/animals/mammals/