Showing posts with label Animals. Show all posts
Showing posts with label Animals. Show all posts

01 August 2010

Seven animals smarter than humans

pigeon

1. Homing Pigeons

While most humans need several types of maps and a compass to find their way home after a long journey, the homing pigeon can return from extremely long distances (more than 1,100 miles) without any guidance.

Well, as a matter of fact, they do have some help: According to research by the University of Frankfurt, these pigeons have iron-containing structures in their beaks, which help them sense the Earth's magnetic field independent of their motion and posture, and thus identify their geographical position.

Research results this year indicate this magnetic charm is present in other birds as well.

ants

Ants

Despite their size, the world's many varieties of ants have amazing skills. One of the most impressive is themycocepurus smithii from the Amazon, a super feminist species that has developed the ability to reproduce via cloning -- dispensing with both sex and males -- to evolve into an all-female breed.

According to research from the University of Arizona, it's not clear when the change happened, but by reproducing without sex, the ants avoid the energetic cost of producing males and double the number of reproductive females produced each generation.

For us humans, ants have also learned super efficient ways to organize their traffic. And 2006 research by the Berkeley University of California has established that the trap-jaw ant (odontomachus bauri) can close its mandibles at an incredible speed: The strike lasts 0.13 milliseconds, 2,300 times faster than the blink of an eye. This allows them to jump enormous heights for their size.

Elephants

3. Elephants

They're huge, and sometimes they seem tired and slow. But it's no surprise that this mammal's peculiar nose is really something: Research from the University of St. Andrews suggests that elephants can keep track of up to 30 absent members of their family by sniffing out their scent and building a mental map of where they are. How useful would this little feature be for moms with several kids?

Even better, according to another study by the same University, elephants can tell whether a human is friendly or a threat by their scent and color of clothing. So good luck trying to fool them.

Termites

4. Termites

In Zimbabwe, the termite species Macrotermes michaelseni has developed a precise technique to farm a specific fungus they feed on. As this fungus can only grow at 87 degrees Fahrenheit, and temperatures outside range from 104 degrees Fahrenheit during day and 35 degrees Fahrenheit at night, the termites have come up with a system to keep the temperature steady in their mounds by constantly opening and closing heating and cooling vents.

This is such a useful idea that Loughborough University has conducted research in order to use the same technique in human buildings. Case in point - the Eastgate Centre in Harare, Zimbabwe has been modeled after the termites' system.

Chimps

. Chimps

Much has been said about the intelligence of chimps, with some people claiming they're geniuses and others saying they're only as smart as a three year old kid. Of course, the actual facts fall in between.

But there is at least one area in which chimpanzees are smarter than humans -- photographic memory.A study by the Primate Research Institute at Kyoto University proves young chimpanzees have an extraordinary working memory capability for numerical recollection, better even than that of human adults tested with the same apparatus following the same procedure.

Presented with the same sequence of numbers, small chimps could recall them, outperforming humans. Not too shabby.

Crows

6. Crows

Contrary to the massive amount of animals and species facing extinction, crows are thriving, reproducing all over the world, with the small exceptions of the Arctic and the Southern tip of South America.

But, although they're proven to be smart in many ways (as Joshua Klein explains in this TED talk), officially scientists say they're not smarter than humans.

However, their amazing capacity for fast adaptation and ability to live in cities show they could be a lot more than they are today. And who knows, one day they might top us.

Dolphins

7. Dolphins

Ok, again, not officially smarter than humans yet, but dolphins have recently been declared the world's second most intelligent creatures (after humans). A zoologist from Emory University in Atlanta, Georgia, according to The Times,has even gone far to say that their "neuroanatomy suggests psychological continuity between humans and dolphins," and called for reconsideration of human-dolphin interactions. Another scientist from the Loyola Marymount University in Los Angeles has even called them 'non-human persons.'

So yes, dolphins are smarter than chimps and with communication skills similar to humans'. Their brains are only second in mass to the human brain, making them cultural animals with distinct personalities with the ability to think about the future, among other faculties.

05 July 2010

7 Animals With the Longest Life Spans



Geoducks

First on the list are these large saltwater clams that are native to the Puget Sound and have been known to live for at least 160 years. They are characterized by their long ‘necks’, or siphons, which can grow to over 1 meter long.


Tuataras

The word “dinosaur” is commonly used to describe an old person, but when it refers to a tuataras, the term is as literal as it is metaphorical. The two species of tuatara alive today are the only surviving members of an order which flourished about 200 million years ago — they are living dinosaurs. They are also among the longest-lived vertebrates on Earth, with some individuals living for anywhere between 100 and 200 years.


Lamellibrachia tube worms

These colorful deep sea creatures are tube worms (L. luymesi) that live along hydrocarbon vents on the ocean floor. They have been known to live 170 years, but many scientists believe there may be some that have lived for more than 250 years.


Red sea urchins

The red sea urchin or Strongylocentrotus franciscanus is found only in the Pacific Ocean, primarily along the West Coast of North America. It lives in shallow, sometimes rocky, waters from the low-tide line down to to 90 meters, but they stay out of extremely wavy areas. They crawl along the ocean floor using their spines as stilts. If you discover one, remember to respect your elders — some specimens are more than 200 years old.


Koi

Koi are an ornamental, domesticated variety of the common carp. The are common in artificial rock pools and decorative ponds. Amazingly, some varieties are capable of living more than 200 years. The oldest known koi was Hanako, a fish that died at the age of 226 on July 7, 1977.


Tortoises

Tortoises are considered the longest living vertebrates on Earth. One of their oldest known representatives was Harriet, a Galapagos tortoise that died of heart failure at the age of 175 years in June 2006 at a zoo owned by the late Steve Irwin. Harriet was considered the last living representative of Darwin’s epic voyage on the HMS Beagle. An Aldabra giant tortoise named Adwaita died at the rumored age of 250 in March 2006.


Ocean quahog

The ocean quahog (Arctica islandica) is a species of clam that is exploited commercially. Researchers have interpreted the dark concentric rings or bands on the shell as annual marks, much like a tree has rings. –Some collected specimens have been calculated to be more than 400 years old.

27 June 2010

Endemic species: Top 9 lonely animals

Lemurs of Madagascar


Lemurs of Madagascar


Madagascar, home of the lemur, is one of the global hotspots for endemic species. There are five families of lemurs with 99 species and subspecies. The smallest lemur would easily fit in your hand, while the largest can top 25 pounds. Many lemurs live in matriarchal societies where females call the shots. Most species spend the majority of their time in the trees and travel the forest canopy climbing and leaping — as agile as any monkey. Sadly, most species are also listed as endangered or threatened and some have fallen into extinction in the last few hundred years.

Hawaiian honeycreeper

Hawaiian honeycreeper


As their name suggests, honeycreepers are endemic to Hawaii. A beautiful bird with a distinct beak, the honeycreeper specializes in probing flowers for nectar, with a particular taste for the flower for which they are named. Some of the subspecies have developed beaks better suited for catching insects. Less than half of Hawaii's 51 historic species of honeycreepers still exist, having been driven to extinction by hunters, disease, habitat loss, competition from invasive species, and predation by human-introduced animals like rats, cats and dogs. Efforts are under way to protect honeycreepers by eradicating avian flu-carrying mosquitos, protecting their habitat and removing invasive species.

Formosan Rock Macaque

Formosan rock macaque


These macaques are a small (2 feet-plus in length) species of monkey endemic to the island of Taiwan. They are listed as a protected species because of over hunting and habitat loss. They are prized for use in medical experiments and have been hunted by locals because the monkeys damage crops. Their numbers fell to an all-time low in the late '80s, but the population has since rebounded thanks to stronger conservation efforts in the last decade.

Javan Rhinoceros

Rhinos of Java


Javan rhinos used to be the most widespread Asian rhinoceroses on the planet but have been hunted to near extinction. The best estimates put the remaining numbers at less than 100. The few Javan rhinos left in the wild live in two small and separate national parks — none live in zoos. The animals are valued by poachers for their horns which can fetch as much as $30,000 per kilogram on the black market. The future does not look good for this rhino — those that aren't killed by poachers can look forward to a uncertain future of disease and health problems caused by inbreeding. Rhinos don't do well in zoos in general, and the Javans have fared even worse; the last captive died in an Australian zoo in 1907.

Santa Cruz Kangaroo Rat

Santa Cruz kangaroo rat


This kangaroo rat lives in the Santa Cruz Sandhills of California and gets its name from its distinctive large hind legs. In the past, this rare animal could be found in the mountains south of San Francisco, but populations been pushed to a single parcel in the Santa Cruz Mountains. One of 23 subspecies of kangaroo rat found in California, the Santa Cruz variety is under a real threat of extinction because of dwindling populations and health problems stemming from low genetic diversity. Their loss would be a withering blow to Santa Cruz mountains — the kangaroo rat is known as a keystone species that support many other species; its loss would send a ripple of damage through the entire food web.

Sinarapan, world's smallest commercially harvested fish

Sinarapan


The Sinarapan is the world's smallest commercially harvested fish, and is rarely longer than half an inch. They are native to the Phillippines and found in only a few freshwater lakes and river systems. They're prized as a food source in Asia where they are fried in oil, boiled with vegetables, or dried and salted. In addition to having to dodge the fisherman's net, Sinarapan are under threat from larger invasive species that find them as tasty as humans do.

Haast Tokoeka kiwi

Haast tokoeka kiwi


The Haast tokoeka kiwi is a beautiful, unique bird that lives in the foothills of the mountains in South Westland, New Zealand. It is critically endangered, with the number of known birds numbering in the low hundreds. This kiwi is a smart bird that uses passivesolar energy when nest building, choosing large flat sun-facing rocks to build its nests under to take advantage of the stored heat. Though once widely eaten by native Maoris and early European settlers, the kiwis are under threat today from loss of habitat and predation from invasive species.

Philippine crocodile

Philippine crocodile


This crocodile lives only in the Philippines. The animal lives in freshwater and is relatively small, as crocodiles go, reaching no more than 9 feet in length. It is endangered from hunting and dynamite fishing (that's when fisherman toss a stick of dynamite into the water and collect what floats up after the explosion.) Today there are only a few hundred known Philippine crocs in the wild.

Galápagos tortoise

Galápagos tortoise


Galápagos tortoises are the largest living tortoise — fully grown adults can tip the scales at over 650 pounds and grow to be 4 feet long. A long-lived species, this tortoise can live to be 150 years old. They are native to seven islands in the Galápagos archipelago. Though still threatened after a few centuries of over-hunting, Galápagos tortoises have been making a strong comeback in recent years thanks to the development of the Galápagos National Park and a successful captive breeding program. Unfortunately, one subspecies out of the 12 is functionally extinct — the last remaining individual lives in a zoo.

20 June 2010

10 Fantastic Cat Facts



1. Ambidexer-Cat?

You probably never thought about a cat as being either left- or right-pawed, but over 40 percent are either lefties or righties. That means there’s quite a few out there who are ambidextrous. Luckily for them, they can probably operate the can opener with both paws…


2. Warm or Cold?

Food that is. Cats don’t like their food too hot or too cold. They like it just right. And for them, just right is room temperature, just like their prey would be in the wild. Cats are indeed the Goldilocks of the animal world.


3. In Living Color

Cats see in color, so your new paisley frock in orange, purple, and yellow won’t be lost on them. They also have fantastic night vision, and only need one-sixth of the light humans require to see. So don’t go getting your cat night-vision goggles.





4. What’s in a Name?

A group of kittens is called a “kindle” (yes, just like that fancy new electronic book device available now), while a group of adult cats is called a “clowder.”














5. Meow?

We all know the meow sound, whether it’s questioning, scared, happy, or imperiously demanding dinner. Curiously, cats only meow at people, not at other cats.

6. Four-Legged Mood Rings

Cats are highly intuitive creatures, and they are more than able to pick up your mood, especially from your tone of voice. They know when you’re yelling at them (though they often don’t seem to care). If you need your cat to calm down, try speaking to her in a soothing, loving voice. You’ll be amazed.


7. Lofty Beginnings

Ever wonder who invented the cat door? It was Sir Isaac Newton. Perhaps he was vexed by his cat wanting in and out all the time and disturbing his work, so he did something about it–much to the relief of cat lovers everywhere.


8. It’s All in the Fall

Cats really do land on their feet. In fact, they all fall in the same way. First they rotate their head, then twist their spine around, followed by a rear leg alignment and finally they relax into it and arch the back, thus lessening impact. But please, don’t experiment with this at home. Take our word for it.


9. Baby Machines

Unless you want a “clowder” of cats cluttering your home, spay, and neuter your furry feline. Just one pair of cats and their kittens can produce 420,000 (!) offspring in a mere seven years.


10. Individuality

Like human fingerprints, cats have their own built-in unique tag of telling them apart–their nose! The nose pads of cats are all uniquely ridged, meaning no two are the same.

08 June 2010

Dangers in the Deep: 10 Scariest Sea Creatures


Box Jellyfish

These gelatinous creatures are flat-out deadly. While no official tallies exist, anecdotal evidence suggest dozens of people and perhaps more than 100 or more die each year from the many species of box jellyfish that exist in all oceans. Some 20 to 40 people die from stings by box jellyfish annually in the Philippines alone, according to the U.S. National Science Foundation. "But because death certificates are not required in many countries within the range of box jellyfish, worldwide fatalities from box jellyfish may be seriously underestimated," the NSF states.

Tiger Shark

Yeah, yeah, the great white shark gets all the attention. But reality is tiger sharks kill more people. And few things (other than snakes) automatically terrify people more than sharks. Tiger sharks will eat anything: fish, seals, birds, squid, small sharks, dolphins, license plates and pieces of old tires, according to NOAA. They can grow more than 18 feet long and weigh a ton. Take that, Jaws! Tiger sharks are found in many tropical and temperate waters, and they are especially common around islands in the central Pacific. For the record: Great whites do attack more people each year, on average. Oh, and a little detail that explains why sharks aren't No. 1 on this list: The number of people attacked by sharks worldwide each year -- a few dozen -- is roughly equal to the number killed by lightning just in the United States. Only four people around the world died from shark attacks last year.

Stonefish

This one nearly tops the list for two reasons: It's the most venomous fish in the world, and it's a master of disguise, hiding in plain sight on the seafloor, looking like any other rock. The stonefish doesn't attack, but you don't want to step on it. Its spines are used as defense against sharks and other predators. The venom can cause temporary paralysis and death if not treated.

Pufferfish

You don't even have to be near water for this creature to kill you. The pufferfish, also known as a blowfish, packs tetrodotoxin -- stronger than cyanide. Specially trained Japanese chefs prepare safe parts of the fish as a delicacy, but every now and then a diner dies. The puffer, named for its ability to suck in water and swell to twice normal size, could end up saving people: a drug made from the puffer's toxin has been tested for treatment of withdrawal symptoms from drugs like heroin.

Sea Snake

The innate human fear of snakes propels these slithering swimmers to the list. However, the truth is that while sea snakes out-venom their terrestrial counterparts, they're highly reclusive and so not much of a threat. Still, sea snakes are related to cobras, so when it comes to venom, they know what they're doing. Their bite paralyzes and kills prey in seconds. They rarely attack humans though, preferring to hunt eels, shellfish and shrimp.

Lionfish

Popular in home aquariums, these docile fish sport a striking fan of venomous spines. Although not fatal to humans, the spines deliver a painful sting that can cause headaches, vomiting, and respiratory distress, according to NOAA. The worst of the pain typically lasts only for about an hour, but some people report pain and tingling sensations for weeks. Lionfish are not aggressive. So the fact is home aquarium owners are more likely to be stung by lionfish than divers or fishermen.

Crocodiles

Saltwater crocs have earned a reputation as one of the wild kingdom's most ferocious predators. They can grow more than 20 feet long and weigh 3,000 pounds, and they have been known to hunt a wide range of prey, including monkeys, kangaroos, buffalo and even sharks. Relying on purely brute strength, they are capable of dragging down water buffaloes and have occasionally victimized humans. Using an attack method known as the "death roll," crocodiles kill their prey by latching on with their jaws and then taking down the dinner with a powerful, twisting roll. The technique is also employed to break apart large animals.

Stingrays

Just the name practically qualifies these creatures for this list. And the death of "Crocodile Hunter" Steve Irwin by stringray in 2006 certainly solidified the reputation of these shark cousins as dangerous beasts.
The tail of of a stingray is capped with a roughly 8-inch spear made of the same stuff that makes up shark scales, known as dermal denticles. The spear, which stiffens when the stingray feels threatened, is serrated like a steak knife and packs a venom that can be deadly to predators. "The venom itself is a largely protein-based toxin that causes great pain in mammals and may also alter heart rate and respiration," according to the Mote Marine Laboratory. Stingrays don't typically attack humans, however.

Sea Lions

Really? Sea lions? Yes, because they're very territorial. They're considered cute, trainable and are major attractions at zoos, but have been known to bite people.
In California, a spate of vicious sea lion attacks reported at Manhattan beach, Newport beach and San Francisco back in 2006 led to growing concern among caretakers and scientists. Some researchers suspect the sea lions may have eaten fish contaminated by toxic algae, which may explain the uncharacteristic behavior. The city of San Diego warns on its web site "Like all wild animals, seals and sea lions are unpredictable and can become aggressive quickly. They have sharp teeth and may bite, particularly if cornered or harassed."

Moray Eels

Snakelike body, protruding snout and wide jaws. These primitive creatures just look like death. They're fish, by the way, and they can be up to 8 feet long. A bite from their razor-sharp teeth and powerful, locking jaws will produce ragged wounds that are prone to infection from the bacteria inside the eels' mouths, according to NOAA. The good news: If morays bite out of fear or by accident (especially when foraging for food), they will usually release their grip and let you go. They tend to hide in crevices and holes during the day, then hunt at night. They'll eat any fish or other creature they can catch. Some expert advice, from NOAA, on how to avoid being bitten by one: Keep your hands out of submerged, rocky holes and crevices. Oh, and avoid this common diver gaffe that leads to many moray eel bites: Don't feed them!

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