What colors do reptiles see?
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not exactly...they detect unusual higher-spectrum dynamic variables(like ultraviolet rays)using the same old colors we see to detect "Visible Light".
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Camouflaged Animals:\n\nCOLOR CHANGE\n>>Reptiles and Amphibians (like frogs, toads,chameleon) and some fish can change the colors of their skin or scales to match a surface that's near them. Their coloration is determined by biochromes in living cells. Biochromes may be in cells at the skin's surface or in cells at deeper levels. These deeper-level cells are called chromatophores. Cuttlefish species, can manipulate their chromatophores to change their overall skin color. Chameleons can produce a wide range of colors and patterns on their skin, but they do this primarily to express mood, not to blend in with different environments.\n \n>>Mammals (like deer, squirrels, or moles) have earth tones color to match trees or dirt.\n\n>> Far north  animals often have white fur or feathers in winter. When spring melts the snows, the white fur and feathers fall out. Pigments in the skin cells change. When new feathers and fur grow in, they match the new color or pattern of the landscape.\n\nCOUNTER SHADING\n>> Mice, white-tailed dear, Canada geese, otters and largemouth bass use a kind of camouflage called counter-shading. These animals have bodies that are dark on top and light on the bottom.When sunlight shines on an animal's darker colors, it makes them look lighter. When the animal's lighter-colored parts are in shadow, it makes them look darker. The two areas of color blend together when seen from a distance. The animal's outline is harder to pick out from surrounding patterns. \n\nELEMENT OF DISGUISE\n>>Insecta (like green katydid or grasshopper) - have a solid body color that matches the color of its environment. Many insects that feed on plants have solid green bodies during part or all of their lives\n\n>>Many animals have distinctive designs on their bodies that serve to conceal them . These designs, which might be spots, stripes or a group of patches, can help the animal in a couple of ways.This disruptive coloration is particularly effective when animals in a species are grouped together. To a lion, a herd of zebras doesn't look like a whole bunch of individual animals, but more like a big, striped mass. The vertical stripes all seem to run together, making it hard for a lion to stalk and attack one specific zebra. The stripes may also help a single zebra hide in areas of tall grass. Since lions are colorblind, it doesn't matter that the zebra and surrounding environment are completely different colors. \n\n>>Walking stick, an insect that looks like an ordinary twig. A predator can easily distinguish a walking stick from its surroundings, but the predator thinks its only a stick, and so ignores it. \n\nIMITATION\n>>Swallowtail butterflies and many insects often use a kind of camouflage called imitation. The shape of their bodies, along with their coloring, makes them look like other things.\n\nMIMICRY\n>>Viceroy butterfly and many harmless insects use mimicry.The monarch butterfly is a bad-tasting insect that most birds will not eat. The viceroy butterfly has a black-and-orange wing pattern that closely matches the monarch's. Birds who see a viceroy leave it alone, thinking it's a monarch. Many harmless insects look and fly like bees, insects which can really sting.♥\n\nFor more camouflaged animals visit this link:\nhttp://www.enchantedlearning.com/coloring/camouflage.shtml
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Swimming penguins have a colour scheme pretty similar to most other swimming (or flying) animals - light bottom and dark top side, in order to reduce contrast with the bottom or the surface when viewed from above or below. The colour scheme looks funny only when they are outside of the water and move bipedally, presenting the white underbelly to the front and the dark top to the behind.
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Many lizards can change their color more or less drastically. In particular, most change between darker and lighter colors with respect to the external temperature and sun radiation (darker to absorb more solar energy, lighter to reflect it).\nHowever, the anoles (genus Anolis) are American lizards that show striking color changes, and are commonly called "chameleons" even though they're not closely related to the real ones. \nThis is one of the common species in North America:\nhttp://www.zo.utexas.edu/research/txherps/lizards/anolis.carolinensis.html
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all the mistery is in RBG (red blue and green).\nit really depends in conditions.\nif u r really in a dark place u will see black coz non of the 3 cones (red, blue and green) are activated.\nbut, many time blue, green or red color can be seen for a while of closing eye- that may be because of presence of some light which activates specific cones or bleaching of certain cones- bleaching makes u to see a object even though it is not there.\n NOTE: black is actually not a color because we see it when non of the color cones are activated.\nin addition, we see white when all the color cones are activated.\n  i have a lab (PC) activity for u if u want to know how it works. \ngo to:\nhttp://www.exploratorium.edu/exhibits/f_exhibits.html\nchoose the option mix-n-match. u need to download shockwave to run the programme.
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They defintely do not see black and white. \n\nAll mammals except primates (apes, monkeys and us humans) are color blind. Being color blind is not the same as seeing black and white, but not being able to see a channel of the color.
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Most male red-headed rock agama lizards are brown speckled, very similar to the females of the species. Only the dominant male of a group (these lizards live groups of 10-20) gains the striking blue blody and red/orange head for which the species is named. \n\nAs to the biological basis of this, agamas have specialized cells imbedded in their outer skin that allow them to change color. In chameleons, these cells may be activated as a result of the animal's physical or psychological state, or in response to the environment (to blend in). In agamas, the cells respond only to the lizard's psychological state, and in the case of the dominant male, this is one of aggression and control. \n\nWere another male in the group to develop similar coloration in response to a change in its psychological state, a fight would immediately ensue, leaving once again only one male with the distinct coloration in the group.
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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.
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Same reason humans have red eye -> Flash light that is sent directly to the retina (parallel to eye level) is reflected off the blood vessels at the back of the retina, hence the red color.\n\nPerhaps you see it more in dogs and cats because they reflect more light off their retina, thats how they manage to have better eye sight than humans.
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The green tree python (Chondrophyton viridis or Morelia viridis) is native to New Guinea, Indonesia and neighbouring countries, whereas the green or emerald boa (Corallus caninus)is like all boas native to the New World and occurs in Amazonia. The green python is not that large for a constrictor (max 1,8 m, about 6 feet), and not all individuals are really green (some are partially yellow, reddish or brown, especially when young). Emerald boas may be longer (up to 2,2 m) and are green with white markings (juveniles also differ in coloration from adults). Even so, as tree-dwelling species both are more slender than other constrictors. The labial pits (heat receptors) of the emerald boa are larger and more visible than those of the green python.\nThese species also differ by other characteristics common to other boas and pythons. Pythons lay eggs, whereas boas are ovoviviparous.
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Green \n\nor maybe blue
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No.\n\nFish can see in five colours. We can only see in three (although some women can see in four). Humans have a blind spot caused by the wiring of their retinas; octopuses do not. The resolution of human vision is not as good as that of hawks. A hawk's vision is about 20/5; they can see an object from about four times the distance of a human with 20/20 vision.\n\nAnd that's just the eyes.\n\nOur skin is not as thick and tough as a rhinoceros', so provides us no protection. It has no fur to keep us warm. We are not the fastest organisms. We are not the only organisms that know how to use tools (see Caledonian crows, some apes and beavers).\n\nAs far as evolution is concerned, if it survives, it's superior. If it doesn't survive, it's inferior. By that standard, all animals are superior, and by inference, all plants.
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I imagine you are referring to their respective body fluids.  In that case I think crabs are actually blue.
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Why is there no mammal with green fur? Green is a good camouflage color, and nonmammals (for example, frogs, snakes, and birds) do come in green. Why not mammals?\n\nThis is similar to the first question I asked on yahoo! answers, and this was the link from the best answer to that question. It was exactly what I was looking for, hope you think so too.\n\n\nI know from my general zoology classes that mammals can make only two kinds of pigment: melanin (black or brown pigment) and the reddish-yellow pigment that red-haired people have. So my first idea for a simple explanation of the nonexistence of green mammals was to say that mammals just can't make green pigment for some reason. This is of course not a good evolutionary explanation, but at least it superficially answers the question.\n\nAs I started researching this a bit more, I was astounded to discover that frogs, birds, and others in the tetrapod, or four-legged, world can't make green pigment, either! Or blue, for that matter. It turns out that all color variation that we see in tetrapod animals is the result of different combinations of patterns of deposition and refraction of the same two types of pigments: black and yellow-red. A chameleon's color changes because of rapid shape changes in refractory cells in its skin, not by rapid production or release of an actual pigment. Frogs are green because of the pattern of refraction of blue light by special cells in their skin, which blends with their yellow pigment.\n\nThe colors of bird feathers are also generated by light refraction but by a different mechanism. The surface of feathers has microscopic ridges that form ordered tracks, much like the surface of a CD. The spacing of the ridges and the size and orientation of the pigment granules they contain determine the feathers' brilliant greens and blues (see links in reference 2). Tiny air pockets in feathers can add to color variation in birds. Light refraction is also responsible for the color of the human iris, which can range into deep blue or green hues. Another example is the sky-blue nose of the mandrill. For an exploration of the ways animals make different colors, see reference 1.\n\nAs you can see, the question is really why mammals don't have the ability to generate a variety of colors in their fur. This is a difficult question, and until we master time travel—to be able to trace back the evolution of mammals—we won't know the answer with certainty. But it's interesting to speculate, so here are some possible explanations.\n\n1. I think that the most important difference is in the lifestyle of mammals. Being warm-blooded animals, they are constantly in search of food and are moving a lot. Even if an animal has the best camouflage, as soon as it starts moving, it is more easily detected. In contrast, many amphibians and reptiles can spend a long time being motionless, and here looking the same as a leaf nearby helps more. I believe that during evolution, mammals have "invested" more into working out active escape mechanisms (for example, running away and hiding in burrows) rather than into developing passive camouflage techniques.\n\n2. Scientists believe that the first mammals were relatively small, ratlike creatures that ate insects. Their habitats were probably different in terms of background color patterns compared with the habitats of amphibians and reptiles. Mammals, of course, originated on land, while amphibians never leave the source of water. More green is around amphibians, and therefore we find more green amphibians.\n\nIn contrast to their early ancestors, many mammals are now large, and for them, a factor of size comes into play in determining coloration. As we know from classical statues, it's difficult to cover a whole mammal with a fig leaf (but it is quite possible for a frog). A solid-green mammal would in fact stand out in real habitats rather than be hidden. For a large animal, being dappled h
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According to this website deer can see some color, and their vision is at least as clear as ours!\nhttp://www.bowhunting.net/artman/publish/NolanAtskoGlowvid.shtml
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All the colours we humans see is a combination of the 7 colours spectrum of visible light that we know as VIBGYOR( Violet, Indigo, Blue, Green, Yellow, Orange and Red). Any object that we see gets its colour from the light rays that are reflected by that object if all the rays are absorbed by an object it looks black and if all the colours are reflected back it looks white. Due to scattering effect of the atmosphere the blue spectrum of light is reflected and hence it looks blue. The grass reflects back the green spectrum of light hence it looks green.
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The chameleon has several cell layers beneath its transparent skin. These layers are the source of the chameleon's color change. Some of the layers contain pigments, while others just reflect light to create new colors.\n\nSeveral factors contribute to the color change. A popular misconception is that chameleons change color to match their environment. This isn't true. Light, temperature, and emotional state commonly bring about a chameleon's change in color. The chameleon will most often change between green, brown and gray, which coincidently, often matches the background colors of their habitat.\n\nAnother interesting fact about the chameleon is that they can move their eyes in two different directions at the same time! Creepy, huh?\n\nHere's a link to an interesting article about the chameleon from our friends at PBS.