I heard that cats and dogs see only in black and white and most other animals, too. Do you know what the facts are about this?
216952
It's not true.\n\nMost animals don't have much in the way of eyes at all, of course, but you're probably more interested in vertebrates.\n\nMost vertebrates have very good color vision.  The primary exception is mammals.  (Snakes are also an exception, for similar reasons.)  We got a bit shafted because our ancestors in the Mesozoic (age of dinosaurs) were all nocturnal.  Nocturnal animals don't really need color vision (black & white works better in the dark), so our ancestors mostly lost it.  Then the dinosaurs died off and mammals retook the day and have been putting color vision back together ever since.\n\nMammalian color vision is, thus, not quite as good as that of the rest of the vertebrates.  Cats and dogs do have color vision, but not as good as ours, and ours isn't as good as that of most reptiles.
6546
Yes.According to some.Dogs and some other animals have been seen behaving strangely in case of a supenatural event,Or before tsunamis and other such stuff. Maybe loss of our kind of intelligence is compensated for by this kind of senses.
380707
Oh, yes.  Many insects can perceive ultraviolet light; and birds have 4 photoreceptor cells in their eyes (we only have 3) so they can also see some ultraviolet.\n\nThe rumors that animals can only see in black and white is wrong, by the way.  Most mammals have only 2 color receptors so they see things less colorfully than we do -- it seems evolution determined that early mammals, being nocturnal animals, did not need all 4 photoreceptors their ancestors did, and lot them.  Very recently -- in evolutionary terms, that means just a few tens of million of years -- the monkey/ape reacquired some of the color sensitivity by having one of the color cell type mutate and differentiate, so we now have 3; but in some cases, the DNA is not foolproof, hence we have color blindness.\n\nThere was an article about this topic in the July 2006 issue of Scientific American, a bit of this is available on the attached link.
354492
Maybe you can understand it if I put it this way as an EXAMPLE  Pure bred dogs and cats all look alike right, Mutts come in many mutations. Not saying anyone is a animal or one is better than another just the difference in DNA variations.
118848
i don't think its that complicated we can only see a fraction of what is around us because of our very poor eye sight and other senses such as smell and touch. i agree with you that there are many other level that we cannot see or feel, but that is our loss. try not to concern yourself with things you have no way of being part of, as there are more things in heaven and earth than you could possibly ever imagine if we could see all levels it would blow our minds.
113224
Cats and dogs both produce dander its just different.. like I am alergic to maple trees but not any other tree.
93991
dogs and cats have seperate blood groups, they actually are further evolved than humans because it is possible for ANY dog to give blood to a dog that has not previously been transfused and for the dog not to suffer any consequences
642144
animals can get everything we have, from diabetes to breast cancer....seriously. my cat has AIDS and cancer. Its not from humans though but it effects the immune system just like it does people so thats why they call it AIDS, its just the animals versiona nd you cant catch it from animals
407543
I've read that dogs look like their owner after awhile. Or is it the other way around? \nSo, yes, two people can start to look and sound alike. But perhaps they were unconsciously looking for such traits in the first place?
437848
There was a meteor shower the last few days, but those happen about once a month or so, with varying intensities, so nothing new there really.  I think there's no reason to think there's a correlation between your animal's behaviour and cosmic events (since there has never been shown to have a correlation before, except during solar eclipses).  Check their food or any stressful factors instead before trying to blame the universe.
654078
Definitely, humans can actually only see a small spectrum of the actual light.  Whatever beings may be out there would likely have different vision.
32347
I beg to differ with andyman_69. Other animals use tools. Other animals have languages. What is interesting is that so far, humans have not had much luck at deciphering their languages and have had more success at teaching them ours, either sign language or recently, to even use typewritten words displayed on a computer screen to communicate. \n\nOn top of this, there are many other behaviors that we share in common with our closest animal relatives. More than we would care to admit, I suspect. Then there is the remarkable genetic evidence that is slowly becoming more and more impressive. \n\nIt is all extremely interesting. What interests me more, is, what is consciousness? Do only humans have it? Or only a small number of other species?\n\nAnd if that is so, why? \n\nIf God did it, how? \n\nAnd I am not just referring to biblical references, but hard data and evidence that we can test in the laboratory.
254589
Calico cats, with their orange, black and white coloration, are almost always female. So are black and orange tortoiseshells. Why?\n\nThe answer has to do with genetics. Every cat has 38 pairs of chromosomes; half of the pairs are from the mother, the other half is from the father. Within every chromosome there are thousands of different genes.\n\nEvery female cat receives one X chromosome from her mother and one X chromosome from her father, while a male receives one X chromosome from his mother and one Y chromosome from his father. Within the X chromosome is a gene for coat color.\n\nIn calicos and tortoiseshells, one X has the black gene; the other X has the orange gene. White coat color is associated with a completely separate gene.\n\nAt conception, the kitten is a one-celled organism, which divides until there are millions of cells that make up the final kitten. Each time a cell divides, it passes on its genetic material.\n\nGene Inactivation\n\nFor the sex chromosomes, there is a battle for power. This is especially true for the X chromosome. If two X chromosomes are present, which determines female sex, one X chromosome will become inactivated at some point in fetal development. When this happens, all the cells descended from the activated X chromosome will have the same characteristics, including coat color. \n\nIn calicos, if the X-chromosome that is left functioning carries the orange gene, then all the cells descended from it will result in an orange color. The same is true if the functioning X chromosome has the black gene. If both X-chromosomes carry the same color gene, then the calico pattern will not appear.\n\nSince X chromosomes inactivate at various times in each individual cat, color patches vary.\n\nThe story is different for male cats. Males have only one X chromosome, and it is never inactivated. Whatever color gene is present on this X chromosome will determine the color of the cat. Males can be calico or tortoiseshell only if they are born with 2 X-chromosomes and a Y (XXY), allowing one X to be inactivated. This genetic defect (XXY) is very rare.
633937
This is a question I've actually thought about before, but the problem is, there is no way to tell if everyone sees the same colors.\n\nFor example, I could be looking at a stop sign.  It is red.  I know what red looks like.  But what if another person had a different perspective of colors?  They are seeing, we'll say, what is green to me, but their whole life, people have called that color "Red," so they think it is red.  They have no way of knowing what red is to me, and vice versa.\n\nI'm sure there are some tests, but if you're just mixing up colors, it would be hard to tell.\n\nWhat a weird thought, huh?
268392
OK, I like this question. :-) Bear with me, what I'm about to share has a point to it all ... You walk through an element all the time. The element I speak of is air. Its so fine in its molecular construction that you don't even realize its there. You can walk through water, but with greater difficulty, beause of its density. You can't walk through a brick wall, because its molecular make-up is to dense. Now, a dog perks up its ears. It hears a sound. But you can't hear that same sound. Owls can see well in the dark, but you can't. A deer sniffs the air because it smells the metal rifle the hunter carries, but you can't smell that. There are colours that you can't detect, because of the way your eye is constructed, but that's not to say that the colour isn't there. Now, going from here ... WHAT IF ... Something existed that was of a colour you couldn't see, made sounds that you couldn't hear, gave off a scent that you couldn't smell, and was constructed of a physical substance that you couldn't feel? (Remember, 100 years ago there were only 40+ substances on the Table of Elements, NOW there's well over 100. How many more might there be?) Yes, dragons exist. They just fall into the above catagory. They have intelect similar to humans, and are able to manifest in a way that allows us to know they're there. Which is why they show up historically all around the world and throughtout time. But, given their physical "construction" no paleontological evedince will ever be found to substantiate this. This is my opinion, and its based on experience. ~ Peace & Blessings ~
392395
i think black and white
129626
I wrote something on this.\n\nYes, there are almost guarenteed more species out of this world.  Heck, there might be some in our own solar system, on the icy moon of europa, or even a gas giant.  THe conditions are harsh, but certain animals adapt certain ways.  I have seen pictures of what some jupitur animals would look like.  Its safe to say, Yes