what are the visual signals that gorillas use in the wild?
344288
I think one technique used by males is to 'yawn' around males that may be creeping into unwanted territories. By 'yawning', the gorilla is actually exposing his impressive canine teeth, kind of saying 'back off buddy, unless you want to mess with these babies'
399230
Not all lizards anyway.\n\nThe nocturnal helmeted gecko has become the first vertebrate known to see colours in the dark\nTHE nocturnal helmeted gecko has become the first vertebrate known to see colours in the dark. \n\nMost creatures, including humans, have eyes that contain two types of light-sensitive cells. In daylight, animals rely mainly on colour-sensing cones that distinguish between light of different wavelengths. At night, when photons are scarce, they rely exclusively on more sensitive rod cells, which are colour-blind. \n\nThe only exception to this rule, and the only animal known to see colours at night, was thought to be the elephant hawkmoth (Deilephila elpenor). It has adaptations, which include different facets of its compound eye, to increase the light captured by its cone cells in the dark (New Scientist, 2 November 2002, p 23).
12543
From a physics/physiology standpoint, we have color because light waves come in different lengths and our eyes perceive a limited band of thoses lengths with differing responses by light sensors in the eyes.\n\nFrom an evolutionary standpoint, color vision (as opposed to black and white), gives us a great deal more information to process our environment.  For instance, a brightly colored bird might hardly be visible to an animal with only black and white vision, but we see it easily, even against a confusing background.  Color can help us see the difference between animal (browns) and plants (greens), healthy(a child covered in mud) and unhealthy (a child covered in blood), and other differences that are more easily recognized due to the greater information richness available.
813802
Degomperation is the latest craze.  And in the US, it's the law to degomperate not only your pet bonobos, but also wild ones.  To really find one with the gomperation organs still in tact, I suggest hiking through Sibera with a clay whistle that plays the g# above middle c.  Good luck.
430794
scent and color. Insects see color.
514051
no idea dude guess the apes will have to answer this one
950960
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
751967
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.
14137
Leopards have spots to break up their body's visible outline when stalking prey in the jungle.  Plus, it makes them more cool.
212124
do a Google search on monkeys
1168495
The orangutan are it.
1185066
They are actually increasing their range of vision by tilting their eyes toward the ground. Birds supposedly are extrasensory feelers, so they probably "sense" worms.
888903
Bats or rats; better find out.\n\nPS Clicking is how their radar works, but we are speaking of vocalizations, not radar ( echolocation, to be precise ), and bats do vocalize.
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.
179044
what do u mean that known any gorillas
13876
Vultures possess not only very good vision, but also an extremely keen sense of smelling. They use both to spot or sense carrion from miles away. Also, vultures usually keep track of other nearby flying members of their kin, and look for signs that someone else has spotted something. Thus, their combined sense can cover a very broad area and increase the chances of finding a good meal.
98241
If you're into biology and you don't have the budget to build an expensive model, why not do a research on how animal camouflage works. Get an iguana or cryptic frog from your backyard or something. (see the link below for the explanation)