Posts

Showing posts with the label The Animal world

Why Do Chameleons Change Their Color?

Image
Contrary to popular belief, chameleons do not change color depending on where they are. For this animal is not a form of camouflage but also a mode of communication. By changing the appearance of their skin , they indicate their mood to their peers . For example, Jackson Chameleon ( Chamaeleo jacksonii ) is covered with yellow spots when angry and Mont Lefo Chameleon ( Chamaeleo wiedersheimi ) will turn gray if he is afraid . Stress, courtship , illness, pregnancy, submission ... each color its meaning ! Please note that this capacity is not unlimited, however ! Indeed, each species has only one range of colors due to its privileged environment . This is why researchers can use the dresses chameleons to identify them. While land chameleons color variations of brown , tree species will decline rather ranges of green, yellow or blue. Elsewhere on the planet , many other animals use this communication technique . This is particularly the case of the cuttlefish that can not only cha...

Black Widow Spider Facts

Image
The Black Widow is one of the world's most dangerous spiders! The toxicity of the venom is such a single bite can cause nausea , spasms, hallucinations and lead to death . During mating females devour all or part of the male ! In fact, many species of spiders do, but the case of sexual cannibalism in the black widow is the most successful . This is an invertebrate animal of the family of arachnids, spiders, which are part of the class of arthropods. There are 8-10 species. Its bite contains a toxic poison that paralyzes the breathing and can cause death . The black widow is about 15 mm, but the male is smaller, measuring just 7 mm. It has a total of 8 eyes and above his mouth two hooks with which it injects its venom. Only the female is dangerous and it is recognized that the red dots on the back door . The American Black Widow is the most dangerous , however . It feeds on insects. It weaves its web of interwoven in all directions in which the insect son caught in the t...

Poison Dart Frog Facts

Image
Poison dart frogs, members of the Dendrobatidae family, wear some of the most brilliant and beautiful colors on Earth. Depending on individual habitats, which extend from the tropical forests of Costa Rica to Brazil, their coloring can be yellow, gold, copper, red, green, blue, or black. Their elaborate designs and hues are deliberately ostentatious to ward off potential predators, a tactic called aposematic coloration. Some species display unusual parenting habits, including carrying both eggs and tadpoles on their backs. Although this "backpacking" is not unique among amphibians, male poison arrow frogs are exceptional in their care, attending to the clutch, sometimes exclusively, and performing vital transportation duties. Dendrobatids include some of the most toxic animals on Earth. The two-inch-long (five-centimeter-long) golden poison dart frog has enough venom to kill 10 grown men. Indigenous Emberá people of Colombia have used its powerful venom for centuri...

Can monkeys read?

Image
A number of scientists working in France that monkeys species of Baboon able to recognize the words of four letters on a computer screen ...  The researchers found that this type of monkeys can distinguish between words that have real meaning and between a set of words counterfeit constituents as a result of mixing four characters randomly ...  Although these monkeys were able to tell the difference between the words after training, but that does not mean they are able to read like us We , or to have any language skills ...  The study , led by John Grainger Joel Vaguc of the University of Aix- Marseille published on the pages of the scientific journal Science famous In the picture  a monkey  called " Dan " is able to distinguish more than 300 words correctly .

spiderman lizard

Image
The Mwanza Flat-headed Agama (Agama mwanzae), a lizard in the family Agamidae, is found in Tanzania, Rwanda, and Kenya. Agama species are widely spread throughout areas of Africa. Agamas are most often found in semi -dessert or scrubland environments. The Spiderman agama is relatively new in the U.S. pet trade and is proving to be very popular due to its intense red and blue coloration and overly active personality. It lives in semi-deserts and can often be seen in the heat of the day basking on rocks or kopjes. The male's head, neck and shoulders are bright red or violet, while the body is dark blue. The female is mostly brown and is difficult to distinguish from female agamas of other species. This lizard is often confused with the Red-headed Rock Agama (Agama agama). The species has become a fashionable pet due to its coloration, which resembles the comic book superhero Spider-Man. Not much information has been found on the breeding of this lizard in capt...

Why Do Ducks Have Orange Feet?

Image
Actually, many species of ducks have feet and legs! tinted a bluish green or gray. But for the ducks that do have orange feet, well, it's all about attracting the ladies. Chicks dig orange. Kevin Omland is an evolutionary biologist at the University of Maryland at Baltimore County, and he knows as much about mallard-duck coloring patterns as anyone; it was his graduate thesis. "I looked at male mallards and thought, gosh, they exhibit so many wonderful colors, I wonder which ones females care about," he says. Do lady ducks lust after the males' green head plumage? Or maybe it's the blue patches on the males' wings? Then again, what female duck can resist a nicely proportioned set of white "neck tie" feathers? After four years of documenting mallard courtships, Omland found that none of those mattered. All they cared about was the brightness of the guy's yellow-orange bill. Bright orange coloring suggests that a male duck, also known as a ...