Sunday 3 March 2013

Ten(10) Animals that are extinct

These are some animals that have  gone extinct.   

Mankind has the honor of quite possibly being the most destructive force to ever hit mother nature. This list looks at some of the more recent, probably lesser known extinctions that humans have lent a helping hand to. Whether by over hunting or over population, driving a species to extinction is nothing to be proud of and it’s certainly not slowing down.

10. Thylacine


Commonly known as the Tasmanian Tiger, the Thylacine was the largest known carnivorous marsupial of modern times. Virtually wiped out in the wild due to constant hunting (they were thought to be a threat to sheep and other small farm animals) and the encroachment of humans on their already limited habitat the Thylacine was finally recognized as being in danger of becoming extinct in 1936, too little, too late as that same year the last Thylacine, named Benjamin, died on 7 September as the result of neglect — locked out of its sheltered sleeping quarters and exposed to freezing temperatures at night in Hobart Zoo, Tasmania. 60 years on there are still claims of sightings but all are yet to be confirmed.

9.Quagga 


The Quagga was a southern subspecies of the Plains Zebra. It differed from other zebras mainly in having stripes on the head, neck, and front portion of its body only, and having brownish, rather than white, on its upper parts. The last free Quaggas may have been caught in 1870. The last captive Quagga, a mare, died on 12 August 1883 in Amsterdam Zoo, where she had lived since 9 May 1867. It was not realized that this Quagga mare was the very last of her kind. Because of the confusion caused by the indiscriminate use of the term “Quagga” for any zebra, the true Quagga was hunted to extinction without this being realized until many years later. The Quagga became extinct because it was ruthlessly hunted down for meat and leather by South African farmers, also they were seen by the settlers as competitors, like other wild grass eating animals, for their livestock, mainly sheep and goats.

8. Passenger Pigeon


The story of the Passenger Pigeon is one of the most tragic extinction stories in modern times. As recently as around 200 years ago they weren’t anywhere near extinction. In fact, they were actually the most common bird in North America, and some reports counted single flocks numbering in the billions. Pigeon meat was commercialized and recognized as cheap food, especially for slaves and the poor, which led to a hunting campaign on a massive scale. Furthermore, due to the large size of their flocks, the birds were seen as a threat to farmers. The last Passenger Pigeon, named Martha, died alone at the Cincinnati Zoo at about 1:00 pm on September 1, 1914.

7.Golden Toad

The first record of the Golden Toad was by herpetologist Jay Savage in 1966. The toad, recognized by its brilliant golden orange color, was native to the tropical cloud forests which surround Monteverde, Costa Rica. None have been seen since 1989. It last bred in normal numbers in 1987, and its breeding sites were well known. In 1987, due to erratic weather, the pools dried up before the larva had matured. Out of potential 30,000 toads, only 29 had survived. In 1988, only eight males and two females could be located. In 1989, a single male was found, this was the last record of the species. Extensive searches since this time have failed to produce any more records of the golden toad.

6.Caribbean Monk Seal



The Caribbean Monk Seal was the only known seal which was native to the Caribbean Sea and the Gulf of Mexico. It is also the only species of seal to go extinct directly due to human causes. The Caribbean monk seal was the first New World mammal to be discovered by Columbus and his company on the coast of Santo Domingo in 1494. It appears in the account of Columbus’ second voyage to America. Columbus promptly ordered his crew to kill eight of the animals, which he called “sea-wolves”, for food, paving the way for exploitation of the species by European immigrants who came in his wake. Since then, the once abundant seals have been hunted for their oil and slaughtered by fishermen, who regarded the animals as competitors. It was officially declared extinct just last year, on June 6th, 2008, although the last recorded account of the species was made at Serranilla Bank between Honduras and Jamaica in 1952. Like other true seals, the Caribbean Monk Seal was sluggish on land. This, along with its lack of fear for man, unaggressive and curious behavior, as well as human hunting, and early habitat exclusion by humans throughout their range may have dramatically speed up their decline and likely contributed to its demise.

want to know about more animals that  have gone extinct?  well then, come back next time and learn more!!

Saturday 2 March 2013

Mind Blowing facts about animals!!

Here are some interesting facts about animals that you would enjoy!!
DID YOU KNOW?

1.Did you know that Elephants are actually afraid of mice and it's not just a myth?





2. Did you know that an Ostrich's eye is bigger than it brain?


3. Did you know that an Octopus is so flexible, that it can slither through openings not much bigger than their eyeballs?


4. Did you know that  a Vampire Bat can drink a victims blood for 30minutes without waking them up??


5. Did you know that an Anteater is nearly 6ft long.However, its mouth is only an inch wide and it has 42 teeth. 


Enjoyed this edition of "MIND BLOWING FACTS ABOUT ANIMALS?"... Well then, be sure to be back on Monday for a next edition!!!


Friday 1 March 2013

The countdown continues of the top(10) most venomous snakes in the world!!!

Here is the moment you have been wait for!! The countdown of the  remaining five(5),in the most venomous snakes in the world!!

5. Black Mamba

The feared Black Mamba is found throughout many parts of the African continent. They are known to be highly aggressive, and strike with deadly precision. They are also the fastest land snake in the world, capable of reaching speeds of up to 20km/h. These fearsome snakes can strike up to 12 times in a row. A single bite is capable of killing anywhere from 10-25 adults. The venom is a fast acting neurotoxin. Its bite delivers about 100–120 mg of venom, on average; however, it can deliver up to 400 mg. If the venom reaches a vein, 0.25 mg/kg is sufficient to kill a human in 50% of cases. The initial symptom of the bite is local pain in the bite area, although not as severe as snakes with hemotoxins. The victim then experiences a tingling sensation in the mouth and extremities, double vision, tunnel vision, severe confusion, fever, excessive salivation (including foaming of the mouth and nose) and pronounced ataxia (lack of muscle control). If the victim does not receive medical attention, symptoms rapidly progress to severe abdominal pain, nausea and vomiting, pallor, shock, nephrotoxicity, cardio toxicity and paralysis. Eventually, the victim experiences convulsions, respiratory arrest, coma and then death. Without antivenin, the mortality rate is nearly 100%, among the highest of all venomous snakes. Depending on the nature of the bite, death can result at any time between 15 minutes and 3 hours.

4.Taipan

















Another entry from Australia, the venom in a Taipan is strong enough to kill up to 12,000 guinea pigs. The venom clots the victim’s blood, blocking arteries or veins. It is also highly neurotoxic. Before the advent of an antivenin, there are no known survivors of a Taipan bite, and death typically occurs within an hour. Even with successful administration of antivenin, most victims will have an extensive stay in intensive care. It has been likened to the African Black Mamba in morphology, ecology and behavior.

3.Blue Krait


The Malayan or Blue Krait is, by far, the most deadly of this species. Found throughout South East Asia and Indonesia, 50% of bites from the deadly Blue Krait are fatal, even with the administration of antivenin. Kraits hunt and kill other snakes, even cannibalizing other Kraits. They are a nocturnal breed, and are more aggressive under the cover of darkness. However, overall they are quite timid and will often attempt to hide rather than fight. The venom is a neurotoxin, 16 times more potent than that of a Cobra. It quickly induces muscle paralysis by preventing the ability of nerve endings to properly release the chemical that sends the message to the next nerve. This is followed by a period of massive over excitation (cramps, tremors, spasms), which finally tails off to paralysis. Fortunately, bites from Kraits are rare due to their nocturnal nature. Before the development of antivenin, the fatality rate was a whopping 85%. Even if antivenin is administered in time, you are far from assured survival. Death usually occurs within 6-12 hours of a Krait bite. Even if patients make it to a hospital, permanent coma and even brain death from hypoxia may occur, given potentially long transport times to get medical care


2.Eastern Brown Snake



Don’t let the innocuous name of this snake fool you, 1/14,000 of an ounce of its venom is enough to kill an adult human. Coming in a variety of species, the Eastern Brown snake is the most venomous. Unfortunately, its preferred habitat is also along the major population centers of Australia. The Brown snake is fast moving, can be aggressive under certain circumstances and has been known to chase aggressors and repeatedly strike at them. Even juveniles can kill a human. The venom contains both neurotoxins and blood coagulants. Fortunately for humans, less than half of bites contain venom and they prefer not to bite if at all possible. They react only to movement, so stand very still if you ever encounter one in the wild.


1.Fierce Snake or Inland Taipan




While I did say that I would not include multiple sub-species in this list, the incredible Inland Taipan deserves a spot of its own. It has the most toxic venom of any land snake in the world. The maximum yield recorded for one bite is 110mg, enough to kill about 100 humans, or 250,000 mice! With an LD/50 of 0.03mg/kg, it is 10 times as venomous as the Mojave Rattlesnake, and 50 times more than the common Cobra. Fortunately, the Inland Taipan is not particularly aggressive and is rarely encountered by humans in the wild. No fatalities have ever been recorded, though it could potentially kill an adult human within 45 minutes.











Monday 25 February 2013

Countdown of the top ten(10) most venomous snakes in the world!!


Ever since I was a child I've  always been fascinated with snakes, so you could  jus imagine how excited i am to bring you this post!. Join this blog on our countdown of the most venomous snakes in the world!!
10.Rattlesnake

only snake from the Americas on the list, the Rattlesnake is easily identifiable by the tell tale rattle on the end of its tail. They are actually a part of the Pit Viper family, and are capable of striking at up to 2/3rd their body length. The Eastern Diamondback in considered the most venomous species in North America. Surprisingly, juveniles are considered more dangerous than adults, due to their inability to control the amount of venom injected. Most species of rattlesnakes have hemotoxic venom, 
destroying tissue, degenerating organs and causing coagulopathy (disrupted blood clotting). Some degree of permanent scarring is very likely in the event of a venomous bite, even with prompt, effective treatment, and can lead to the loss of a limb or death. Difficulty breathing, paralysis, drooling and massive hemorrhaging are also common symptoms. Thus, a rattlesnake bite is always a potentially fatal injury. Untreated rattlesnake bites, especially from larger species, are very often fatal. However, antivenin, when applied in time, reduces the death rate to less than 4%



9.Death Adder
The appropriately named Death Adder is found in Australia and New Guinea. They actually hunt and kill other snakes, including some on this list, usually via ambush. Death Adders look quite similar to vipers, in that they have triangular shaped heads and short, squat bodies. They typically inject around 40-100mg of venom with an LD of 0.4mg-0.5mg/kg. An untreated Death Adder bite is one of the most dangerous in the world. The venom is a neurotoxin. A bite causes paralysis and can cause death within 6 hours, due to respiratory failure. Symptoms generally peak within 24-48 hours. Antivenin is very successful in treating a bite from a Death Adder, particularly due to the relatively slow progression of symptoms, but before its development, a Death Adder bite had a fatality rate of 50%. With the quickest strike in the world, a Death Adder can go from strike position to striking and back again within 0.13 of a second.

8.vipers

Vipers are found throughout most of the world, but arguably the most venomous is the Saw Scaled Viper and the Chain Viper, found primarily in the Middle East and Central Asia, particularly India, China and South East Asia. Vipers are quick tempered and generally nocturnal, often active after rains. They are also very fast. Most of these species have venom that cause symptoms that begin with pain at the site of the bite, immediately followed by swelling of the affected extremity. Bleeding is a common symptom, especially from the gums. There is a drop in blood pressure and the heart rate falls. Blistering occurs at the site of the bite, developing along the affected limb in severe cases. Necrosis is usually superficial and limited to the muscles near the bite, but may be severe in extreme cases. Vomiting and facial swelling occurs in about one-third of all cases. Severe pain may last for 2-4 weeks. Often, local swelling peaks within 48-72 hours, involving the affected limb. Discoloration may occur throughout the swollen area as red blood cells and plasma leak into muscle tissue. Death from septicaemia, respiratory or cardiac failure may occur 1 to 14 days post-bite, or even later.

7.Philippine Cobra










Most species of Cobra would not make this list; however the Philippine Cobra is the exception. Drop for drop, its venom is the most deadly of all the Cobra species, and they are capable of spitting it up to 3 metres. The venom is a neurotoxin which affects cardiac and respiratory function, and can cause neurotoxicity, respiratory paralysis and death in thirty minutes. The bite causes only minimal tissue damage. The neurotoxins interrupt the transmission of nerve signals by binding to the neuro-muscular junctions near the muscles. The symptoms might include headache, nausea, vomiting, abdominal pain, diarrhea, dizziness, collapse and convulsions.

6. Tiger Snake



Found in Australia, the Tiger snake has a very potent neurotoxic venom. Death from a bite can occur within 30 minutes, but usually takes 6-24 hours. Prior to the development of antivenin, the fatality rate from Tiger snakes was 60-70%. Symptoms can include localized pain in the foot and neck region, tingling, numbness and sweating, followed by a fairly rapid onset of breathing difficulties and paralysis. The Tiger snake will generally flee if encountered, but can become aggressive when cornered. It strikes with unerring accuracy.

Be sure to be back for rest, because the  countdown just gets better!!

Sunday 24 February 2013

Animals you may not have known.

As I said in my previous post, there are millions of animals and it is impossible to know all of them. Here is  a short  list that I put together of animals that  are not commonly known.After reading this I hope you would be aware of   them.

  1. THE WOLVERINE.

I know many persons may be thinking, that I  am talking about "Wolverine"the  XMEN character(who by the way, is awesome!), but actually I am not talking about that "Wolverine".  The wolverine that I am talking about is an actual animal, which behaves, much like the XMEN character.   Everything you need to know about the wolverine  would be provided for you below.
You dont want to get them ANGRY!


The wolverine is a powerful animal that resembles a small bear but is actually the largest member of the weasel family.
These tough animals are solitary, and they need a lot of room to roam. Individual wolverines may travel 15 miles (24 kilometers) in a day in search of food. Because of these habitat requirements, wolverines frequent remote boreal forests, taiga, and tundra in the northern latitudes of Europe, Asia, and North America.
Wolverines eat a bit of vegetarian fare, like plants and berries, in the summer season, but this does not make up a major part of their diet—they are tenacious predators with a taste for meat. Wolverines easily dispatch smaller prey, such as rabbits and rodents, but may even attack animals many times their size, such as caribou, if the prey appears to be weak or injured. These opportunistic eaters also feed on carrion—the corpses of larger mammals, such as elk, deer, and caribou. Such finds sustain them in winter when other prey may be thinner on the ground, though they have also been known to dig into burrows and eat hibernating mammals.
Males scent-mark their territories, but they share them with several females and are believed to be polygamous. Females den in the snow or under similar cover to give birth to two or three young each late winter or early spring. Kits sometimes live with their mother until they reach their own reproductive age—about two years old.
Wolverines sport heavy, attractive fur that once made them a prime trapper's target in North America. Their fur was used to line parkas, though this practice is far less common today and the animals are protected in many areas.


Saturday 23 February 2013

The Basics

Scientists estimate that there may be between 3 and 30 million species of animals on our planet. If you're just starting to learn about animals and wildlife, it would be an overwhelming task to try and memorize species, one by one. Instead, an understanding of the main groups of animals provides a good foundation for further learning. In this article, I'll take a look at Five groups of animals, their characteristics and the types of organisms that belong to each group. Once you have a understanding of these six groups, you'll be on your way to grasping the basic characteristics of virtually every animal on the planet.


  • FISHES





Fishes were among the first vertebrates to evolve. The earliest known fishes were the ostracoderms, a now-extinct group of jawless fishes that appeared in the Cambrian Period, about 510 million years ago. Other early fish include the conodonts and the agnanthans (the hagfish and the lamprey). Fishes later evolved jaws and diversified into a number of lineages including cartilaginous fishes, ray-finned fishes and lobe-finned fishes.
The ray-finned fishes are the most diverse of all vertebrate groups, with some 24,000 species. There are about 810 species of cartilaginous fishes and 8 species of lobe-finned fishes.
  • AMPHIBIANS

Amphibians were the first vertebrates to make the move from life in water to life on land. Despite their early colonization of terrestrial habitats, most lineages of amphibians have never fully severed their ties with aquatic habitats. The first amphibians evolved from lobe-finned fishes approximately 370 million years ago during the Devonian Period.
Amphibians include newts and salamanders, frogs and toads, and caecilians. There are between 5000 and 6000 species of known amphibians alive today. Amphibian species are in decline around the world due to a variety of threats including of invasive species, habitat destruction, disease, climate change and toxins.
  • REPTILES

Reptiles are cold-blooded vertebrates that diverged from ancestral amphibians about 340 million years ago during the Carboniferous Period. Early reptiles included organisms such as Hylonomus, Petrolacosaurus, Archaeothyris and Paleothyris. The oldest evidence of reptiles is a set of footprints found in Nova Scotia. Two characteristics distinguish early reptiles from amphibians: scales and the ability to lay hard-shelled amniotic eggs.
Reptiles include turtles, squamates, crocodiles and tuataras. There are about 8,000 species of reptiles alive today. Of the four reptile groups, the squamates (amphisbaenians, lizards and snakes) are the most diverse with nearly 7,600 species
  • BIRDS



Birds evolved from reptiles during the Mesazoic Era about 150 million years ago. Today, more than 9,000 species inhabit virtually every terrestrial habitat on the planet. Birds have a number of characteristics that sets them apart from other vertebrates such as feathers, bills and a furcula.
Birds, best known for their ability to fly, are unmatched in their command of the skies. Albatrosses glide over the vast open sea, hummingbirds hover motionless in mid-air, and birds of prey capture prey with pinpoint accuracy. But not all birds are aerobatic experts. Some species such as ostriches, kiwis and penguins, lost their ability to fly long ago in favor of lifestyles suited more for land or water.
  • MAMMALS


Mammals are vertebrates that evolved from therapsid reptiles during the Jurassic Period about 200 million years ago. The first mammals, known as morganucodontids, were nocturnal insect eaters that resembled modern-day shrews. For the better part of 130 million years, mammals remained small and lived in a world dominated by the dinosaurs. But around 65 million years ago, a drastic shift in climate caused the extinction of more than two-thirds of the animal species on the planet, including the dinosaurs. Mammals survived this bout of climate change and in its wake, diversified and colonized the many newly-available habitats. Today, mammals are remarkably varied, with some 5,400 species occupying every continent on the globe.
Mammals display a remarkable array of adaptations that enable them to inhabit a wide range of habitats. Mammals range in size from the minute bumblebee bat which measures a mere three centimeters in length, to the magnificent blue whale, which can measure 33 meters head-to-tail. Some of the better-known mammal groups include carnivores, rodents, elephants, marsupials, rabbits, bats, primates, seals, anteaters, cetaceans, odd-toed ungulates and even-toed ungulates.