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Tuesday 4 May 2010

Dendrobates Tinctorius

Dendrobates tinctorius, also known by the common name dyeing dart frog, is a species of poison dart frog. It is the largest species, reaching lengths of 50 millimetres. This species is distributed throughout the eastern portion of the Guiana Shield, including parts of Guyana, Suriname, Brazil, and nearly all of French Guiana.The Golden Poison Frog's alkaloid poison, one of a number of poisons common to dart frogs, prevents nerves from transmitting impulses, leaving the muscles in an inactive state of contrac The average dose carried will vary between locations, and consequent local diet, but the average wild P. terribilis is generally estimated to contain about one milligram of poison, enough to kill about 10,000 mice. This estimate will vary in turn, but most agree that this dose is enough to kill between 10 and 20 humans, which correlates to up to two African bull elephants. This is roughly 15,000 humans per gram.tion. This can lead to heart failure or fibrillation

Jelly Fish



Jellyfish (also known as jellies or sea jellies) are free-swimming members of the phylum Cnidaria. All jellyfish sting their prey using nematocysts, also called cnidocysts, stinging structures located in specialized cells called cnidocytes, which are characteristic of all Cnidaria. Contact with a jellyfish tentacle can trigger millions of nematocysts to pierce the skin and inject venom Scyphozoan jellyfish stings are often uncomfortable, though not generally deadly, but some species of the class Cubozoa, or the Box jellyfish, such as the famous and especially toxic Irukandji, can be deadly. Stings may cause anaphylaxis, which may result in death. Hence, victims should immediately get out of the water. Medical care may include administration of an antivenom


King Cobra

The King Cobra is the world's longest venomous snake, with a length up to 5.6 m. This species is widespread throughout Southeast Asia and parts of India, and is found mostly in forested areas. The king cobra is fierce, agile and can produce large amounts of highly potent venom in a single bite. It is one of the most dangerous and feared Asiatic snakes.The venom of King Cobra is primarily neurotoxic but also contains cardiotoxic compounds.It is composed mostly of proteins and polypeptides. During a bite, venom is forced through the snake's half-inch (1.25 cm) fangs and into the wound, and quickly attacks the victim's central nervous system and induces severe pain, blurred vision, vertigo, drowsiness, and paralysis. Envenomation progresses to cardiovascular collapse, and the victim falls into a coma. Death soon follows due to respiratory failure. In the past, the LD50 of King Cobra’s venom was treated as 1.7 mg/kg (which is one of the least toxic elapids. However, this is not always true. According to the recent toxinology study, the LD50 of Chinese King Cobra venom is 0.34 mg/kg . This shows that actually King Cobra can be more venomous than most of the other species with its range, like chinese cobra]. The King Cobra is also capable of delivering larger quantities of venom than most other venomous snakes, injecting a 380-600 mg dose in a single bite. This quantity is enough to kill 20-40 grown men or even an elephant. One bite from a King Cobra can cause the death of a healthy adult human within 15 minutes,but death usually occurs between 30–45 minutes.The mortality rate from a bite can be over 75%, or only 33%, depending upon treatment details. It is regarded as one of the deadliest snakes in the world.



Black Mamba

The black mamba is the longest venomous snake in Africa, with an average length around 8 feet, but may grow to 14 feet. It got its name because of the black inside of its mouth; the actual color of the skin is varied: dull yellowish-green to a gun-metal grey. It is one of the fastest snakes in the world, capable of moving at 10 to 12 mph.The Black mamba is one of the most venomous snakes in the world, with a LD50 of 0.25 mg/kg. Its bite delivers about 100–120 mg of venom on average, however it can deliver up to 400 mg of venom; 10 to 15 mg is deadly to a human adult. The bites from a black mamba can produce enough venom to kill 15-25 people. Mortality rate is nearly 100% unless the snakebite victim is promptly treated with black mamba antivenom or is put on a respirator or ventilator.

Rattle Snake


There are approximately thirty species of rattlesnake, with numerous subspecies. They receive their name for the rattle located at the end of their tails. The rattle is used as a warning device when threatened.scarring is very likely in the event of a venomous bite, even with prompt, effective treatment, and a severe envenomation, combined with delayed or ineffective treatment, can lead to the loss of a limb or death. Thus, a rattlesnake bite is always a potentially fatal injury. Untreated rattlesnake bites, especially from larger species, are very often fatal. However, antivenom, when applied in time, reduces the death rate to less than 4%. It is estimated that between 7,000 and 8,000 people are bitten by venomous snakes each year, and about five of those die.

Red Back Spider

The Redback spiders live everywhere throughout the Australian continent. Female Redback spiders are black in color with a very apparent red or orange stripe that is visible on the back of the spider. The female Redback spider is dangerous and almost always connected to human deaths. Redback spider bites cause severe pain at the site of the bite and cause other symptoms to include: sweating, muscular weakness, vomiting, and nausea. Redback spider venom is a neurotoxin that affects the neurotransmitters causing there depletion. The Redback spider has caused several reported deaths of bitten human beings but none have died since the release of an antivenom. Over 250 bites receive antivenom treatment each year with many more cases most likely go unreported.

Piranha

A piranha or piraƱa is a member of family Characidae in order Characiformes of omnivorous freshwater fish that live in South American rivers. In Venezuelan rivers, they are called caribes. They are known for their sharp teeth and a voracious apPiranha teeth are often used to make tools and weapons by the indigeneous population. Piranha are also popular as food, although if an individual piranha is caught on a hook or line, it may be attacked by other piranhas.Piranha are commonly consumed by subsistence fishermen and often sold for food in local markets. In recent decades, dried specimens have been marketed as tourist souvenirs. Piranhas occasionally bite and sometimes injure bathers and swimmers. A piranha bite is sometimes considered more an act of carelessness than that of misfortune, but piranhas are a considerable nuisance to commercial and sport fishers because they steal bait, mutilate catch, damage nets and other gear and may bite when handled.


Coral Snake

The coral snakes are a large group of elapid snakes that can be subdivided into two distinct groups, Old World coral snakes and New World coral snakes. There are 11 species of Old World coral snake in one genus, and over 65 recognized species of New World coral snakes in three genera. New World coral snakes possess the second most potent venom of any North American snake, behind some rattlesnake species. However, few bites are recorded due to their reclusive nature and the fact they generally inhabit sparsely populated areas. When confronted by humans, coral snakes will almost always attempt to flee, and bite only as a last resort. In addition, coral snakes have short fangs that cannot penetrate thick leather clothing. Any skin penetration, however, is a medical emergency that requires immediate attention. Coral snakes have a powerful neurotoxin that paralyzes the breathing muscles; mechanical or artificial respiration, along with large doses of antivenom, are often required to save a victim's life. There is usually only mild pain associated with a bite, but breathing difficulties and ptosis can occur within hours.

Komodo Dragon

The Komodo dragon is a species of lizard that inhabits the islands of Komodo, Rinca, Flores, and Gili Motang in Indonesia.A member of the monitor lizard family, it is the largest living species of lizard, growing to an average length of 2 to 3 metres and weighing around 70 kilograms. Their unusual size has been attributed to island gigantism, since there are no other carnivorous animals to fill the niche on the islands where they live.However, recent research suggests that the large size of komodo dragons may be better understood as representative of a relic population of very large varanid lizards that once lived across Indonesia and Australia, most of which died out after contact with modern humans, along with other megafauna.Although attacks are very rare, Komodo dragons have been known to attack humans; on June 4, 2007 a Komodo dragon attacked an eight-year-old boy on Komodo Island. The boy later died of massive bleeding from his wounds. It was the first recorded fatal attack in 33 years. Natives blamed the attack on environmentalists outside the island prohibiting goat sacrifices. This denied the Komodo dragons their expected food source, causing them to wander into human civilization in search of food. On March 24, 2009, two Komodo Dragons attacked and killed fisherman Muhamad Anwar on Komodo. Anwar was attacked after he fell out of a sugar-apple tree and was left bleeding badly from bites to his hands, body, legs, and neck. He was taken to a clinic on the neighboring island of Flores where he was pronounced dead on arrival.
In a bizarre incident in June 2001, Phil Bronstein, Executive Editor of the San Francisco Chronicle newspaper, was given a special tour of the Komodo dragons at the Los Angeles Zoo for a Father's Day present by his wife, the actress Sharon Stone. Bronstein and Stone were benefactors of the zoo. While barefooted and petting one of the dragons, Bronstein was bitten and subsequently lost his big toe.

The great white shark, Carcharodon carcharias, also known as great white, white pointer, white shark, or white death, is a large lamniform shark found in coastal surface waters in all major oceans. The great white shark is very well known for its size, because it can exceed 6 metres in length and 2,240 kilograms in weight. It becomes sexually mature at around 15 years of age and has a lifespan of 30 to over 100 yearsMore than any documented attack, Peter Benchley's best selling novel Jaws and the subsequent 1975 film adaptation directed by Steven Spielberg provided the great white shark with the image of a "man eater" in the public mind.While great white sharks have killed a few humans, they typically do not target them: for example, in the Mediterranean Sea there have been 31 confirmed attacks against humans in the last two centuries, most non-fatal. Many incidents seem to be "test-bites". Great white sharks also test-bite buoys, flotsam, and other unfamiliar objects, and might grab a human or a surfboard to identify it. The great white shark is arguably the world's largest known predatory fish, eating dolphins, porpoises, whale carcasses and pinnipeds such as seals and sea lions. It is the only surviving species of its genus, Carcharodon.

Monday 3 May 2010

Tree Dwelling Spider

The Tree-dwelling Funnel-web spider is also a resident of Australia though this spider is most commonly found on the east coast of the continent. Unlike the Redback spider the male Tree-dwelling Funnel-web spider is the killer, with venom five times as deadly as the female of the species. The body of the spider is glossy in nature with a color of either black or brown. The Tree-dwelling Funnel-web spider is extremely aggressive standing up on it hind legs when threatened and exposing their fangs. The venom of this impressive spider is a neurotoxin that cause the nerves to begin to fire rapidly. The bite of this spider can result in the following symptoms: salivation, muscle twitching, sweating, and tearing of the eyes. Many deaths have occurred from the bite of The Tree-dwelling Funnel-web spider before the introduction of an antivenom but even with the antivenom available the bite can be life threatening without immediate medical attention. The most interesting thing about the venom of these spiders is that most animals seem to be immune to their poison but it is extremely toxic to human beings and monkeysThe Tree-dwelling Funnel-web spider is also a resident of Australia though this spider is most commonly found on the east coast of the continent. Unlike the Redback spider the male Tree-dwelling Funnel-web spider is the killer, with venom five times as deadly as the female of the species. The body of the spider is glossy in nature with a color of either black or brown. The Tree-dwelling Funnel-web spider is extremely aggressive standing up on it hind legs when threatened and exposing their fangs. The venom of this impressive spider is a neurotoxin that cause the nerves to begin to fire rapidly. The bite of this spider can result in the following symptoms: salivation, muscle twitching, sweating, and tearing of the eyes. Many deaths have occurred from the bite of The Tree-dwelling Funnel-web spider before the introduction of an antivenom but even with the antivenom available the bite can be life threatening without immediate medical attention. The most interesting thing about the venom of these spiders is that most animals seem to be immune to their poison but it is extremely toxic to human beings and monkeys

Brazilian Wandering Spider


The Brazilian Wandering Spider, also known as the “ Banana Spider”, can be found in the jungles of South America. It does not have a web like standard spiders and can be found wondering on the jungle floor, hence its name. Though the jungle is this spiders natural habitat it is also commonly found in peoples homes. This spider is a very aggressive spider and tends to be nervous. This spider is commonly found hidden in the vegetation of banana trees and has been found stowed away in banana crates. This spider is known to be the most deadly spider in the Americas. The venom of this spider can be fatal to a mouse in a dose as small as 0.006mg! The Brazilian Wandering Spiders venom is also a neurotoxin and is very painful due to it release of serotonin. An interesting side effect of this spiders bite is that it is known to cause priapism, an erection that can last longer than four hours. Now this is one hardcore spider

Red Bold Spider

This species found all over the continent is Australia’s most famous deadly spider. The red striped spider has a neurotic venom that induces severe pain, however, deaths are rare. Thousands of people are bitten but only approximately 20% of the victims require treatment. Generally, the children and the elderly are the most exposed to the spider’s threat. This is one of the few spider species that displays sexual cannibalism while mating.

Brown Recluse Spider

The Brown Recluse Spider, although nowhere near as deadly as the other spiders on this page, also deserves respect. The Brown Recluse spider is a small brown spider with a backwards violin shaped mark on the back of his head. This mark also led the spider to be known as the “ fiddle-back spider”. This spiders venom causes ulceration. The Brown Recluse’s bite does not tend to be painful at the time of the bite and some people will not even know they have been bitten. In the first few hours the bite will only appear small and red like a standard bug bite but within 24 hours will begin to swell and blister. If bitten in fatty tissue a deep lesion will occur that may not heal for several years! These bites without proper care have been known to lead to amputation of affected limbs. It is very likely that many people died of infection from the spider bites before the introduction of modern medical care. Below is a photo a Brown Recluse bite.

Sunday 2 May 2010

Marbled Cone Snail

Conus marmoreus, common name the "marbled cone", is a species of predatory sea snail, a marine gastropod mollusk in the family Conidae, the cone snails, cone shells or cones. This is an Indo-Pacific species.This snail is venomous, like all cone snails. It possesses the most toxic venom of all snail species. It is also among the 5 most venomous animals in the world, all of which may be found in Australia.

Stone Fish

Synanceia is a genus of fish of the family Synanceiidae, the Stonefishes, whose members are venomous, dangerous, and even fatal to humans. It is the most venomous fish in the world. They are found in the coastal regions of Indo-Pacific oceans. They are primarily marine, though some species are known to live in rivers. Its species have potent neurotoxins secreted from glands at the base of their needle-like dorsal fin spines which stick up when disturbed or threatened.The vernacular name of the species, the stonefish, derives from being able to camouflage and transform itself to a gray and mottled color similar to the color of a stone. Divers have sometimes stepped on them, thinking they are stones. The type species of the genus is Synanceia verrucosa, and it includes the species Synanceia horrida that Linnaeus described as Scorpaena. 

Blue Ringed Octopus

The blue-ringed octopuses  are three octopus species that live in tide pools in the Pacific Ocean, from Japan to Australia. Despite their small size and relatively docile nature, they are currently recognized as one of the world's most venomous animals. They can be recognized by their characteristic blue and black rings and yellowish skin. They hunt small crabs, hermit crabs, and shrimp,and may bite attackers, including humans, if provoked.The blue-ringed octopus is 12 to 20 cm, but its venom is powerful enough to kill humans. There is no blue-ringed octopus antivenom available.The octopus produces venom that contains tetrodotoxin, 5-hydroxytryptamine, hyaluronidase, tyramine, histamine, tryptamine, octopamine, taurine, acetylcholine, and dopamine. The major neurotoxin component of blue-ringed octopus venom was originally known as maculotoxin but was later found to be identical to tetrodotoxin, a neurotoxin which is also found in pufferfish and cone snails. Tetrodotoxin blocks sodium channels, causing motor paralysis and respiratory arrest within minutes of exposure, leading to cardiac arrest due to a lack of oxygen. The toxin is created by bacteria in the salivary glands of the octopus.

Puffer Fish

Tetraodontidae is a family of primarily marine and estuarine fish of the Tetraodontiformes order. The family includes many familiar species which are variously called pufferfish, balloonfish, blowfish, bubblefish, globefish, swellfish, toadfish, toadies, honey toads, and sea squab. They are morphologically similar to the closely related porcupinefish, which have large conspicuous spines.Puffer poisoning usually results from consumption of incorrectly prepared puffer soup, fugu chiri or occasionally from raw puffer meat, sashimi fugu. While chiri is much more likely to cause death, sashimi fugu often causes intoxication, light-headedness, and numbness of the lips, and is often eaten for this reason. Puffer's poisoning deadens the tongue and lips, and induces dizziness and vomiting, followed by numbness and prickling over the body, rapid heart rate, decreased blood pressure, and muscle paralysis. The toxin paralyzes diaphragm muscles and stops breathing. Patients who live longer than 24 hours typically survive, although possibly after a coma lasting several days. Some patients claim to have remained fully conscious throughout the coma, and can often recount events that occurred while they were supposedly unconscious. In Voodoo, puffer's poison must be ingested by the victim for the black magic of creating "zombies," most likely because of the pseudocomatose effect

Grizzly Bear

The grizzly bear (Ursus arctos horribilis), also known as the silvertip bear, is a subspecies of brown bear  that generally lives in the uplands of western North America. This subspecies is thought to descend from Ussuri brown bears which crossed to Alaska from Eastern Russia 100,000 years ago, though they did not move south until 13,000 years ago.Grizzlies are considered by some experts to be the most aggressive bears even by the standards of brown bears. Aggressive behavior in grizzly bears is favored by numerous selection variables. Unlike the smaller black bears, adult grizzlies are too large to escape danger by climbing trees, so they respond to danger by standing their ground and warding off their attackers. Increased aggressiveness also assists female grizzlies in better ensuring the survival of their young to reproductive age. Mothers defending cubs are the most prone to attacking, being responsible for 70% of fatal injuries to humans. Historically, bears have competed with other large predators for food, which also favors increased aggression.Campers are warned to hang food, garbage, and toiletries out of reach of bears, or to use a secure bear cache.Grizzly bears normally avoid contact with people. In spite of their obvious physical advantages and many opportunities, they almost never view humans as prey; bears rarely actively hunt humans. Most grizzly bear attacks result from a bear that has been surprised at very close range, especially if it has a supply of food to protect, or female grizzlies protecting their offspring. In such situations, property may be damaged and the bear may physically harm the person.

Crocodile

A crocodile is any species belonging to the family Crocodylidae . The term can also be used more loosely to include all members of the order Crocodilia: i.e. the true crocodiles, the alligators and caimans and the gharials , or even the Crocodylomorpha which includes prehistoric crocodile relatives and ancestors.Crocodiles are ambush hunters, waiting for fish or land animals to come close, then rushing out to attack. As cold-blooded predators, they have a very slow metabolism, and thus can survive long periods without food. Despite their appearance of being slow, crocodiles are top predators in their environment, and various species have been observed attacking and killing sharks.A famous exception is the Egyptian Plover which is said to enjoy a symbiotic relationship with the crocodile. According to unauthenticated reports, the plover feeds on parasites that infest the crocodile's mouth and the reptile will open its jaws and allow the bird to enter to clean out the mouth.

Saturday 1 May 2010

Black Panther


A black panther is a large black cat. Black panthers are melanistic colour variants of several species of larger cat. Wild black panthers in Latin America are black jaguars, in Asia and Africa black leopards, and in North America may be black jaguars or possibly black cougarsThe jaguar is a beautiful creature, the ground-colour of the fur a rich golden-red tan, abundantly marked with black rings, enclosing one or two small spots within. This is the typical colouring, and it varies little in the temperate regions; in the hot region the Indians recognise three strongly marked varieties, which they regard as distinct species – the one described; the smaller jaguar, less aquatic in his habits and marked with spots, not rings; and, thirdly, the black variety. They scout the notion that their terrible "black tiger" is a mere melanic variation, like the black leopard of the Old World and the wild black rabbit. They regard it as wholly distinct, and affirm that it is larger and much more dangerous than the spotted jaguar; that they recognise it by its cry; that it belongs to the terra firma rather than to the water-side; finally, that black pairs with black, and that the cubs are invariably black. Nevertheless, naturalists have been obliged to make it specifically one with Felis onca , the familiar spotted jaguar, since, when stripped of its hide, it is found to be anatomically as much like that beast as the black is like the spotted leopard, or smaller cats.

Hyena


The Hyaenidae is a mammalian family of order Carnivora. The Hyaenidae family, native to both African and Asian continents, consists of four living species, the Striped Hyena and Brown Hyena, the Spotted Hyena , and the Aardwolf.Many cultures, including those in Africa, have historically viewed the hyena negatively, associating them with gluttony, uncleanliness and cowardice.

Part of their bad reputation may stem from the hyena's tendency to scavenge graves for food. They are one of the few creatures naturally suited for this, due to their ability to devour and digest every part of a carcass, including bone.The word hyena is derived from the Greek hyaina, meaning "pig", and has a long association with cruelty, treachery and greed.

In Malawi, in the local language large hyenas reputed to be a man-eater were called lipwereri and the ordinary hyena was called a fisi.The Bouda is a mythical tribe reputed to house members able to transform into hyenas. Belief in "Werehyenas" is so entrenched within the traditional lore of the Bornu people of north-eastern Nigeria, that their language even contains a special word, bultungin, which translates as "I change myself into a hyena".

The haunting laughter-like calls of the Spotted Hyena inspired the idea in local cultures that they could imitate human voices and call their victims by name. Hyenas are also associated with divination and sometimes thought of as tools of demons and witches. In African folklore, witches and sorcerers are thought to ride hyenas or even turn into them.

Lion


The lion is one of the four big cats in the genus Panthera, and a member of the family Felidae. With some males exceeding 250 kg in weight,it is the second-largest living cat after the tiger. Wild lions currently exist in Sub-Saharan Africa and in Asia with a critically endangered remnant population in Gir Forest National Park in India, having disappeared from North Africa and Southwest Asia in historic times. Until the late Pleistocene, about 10,000 years ago, the lion was the most widespread large land mammal after humans. They were found in most of Africa, much of Eurasia from western Europe to India, and in the Americas from the Yukon to Peru.