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News articles on animal behavior
Mongabay.com news articles on animal behavior in blog format. Updated regularly.
(07/31/2012) Scientists have succeeded in capturing amazing footage of the imperial cormorant (Phalacrocorax atriceps) diving 150 feet below the ocean's surface—and it's from the bird's point of view!
Nature's Compass: The Mystery of Animal Navigation – Book Review
(07/06/2012) Migration patterns, natal homing, and daily activities by animals all require significant navigation capacities. In Nature’s Compass: The Mystery of Animal Navigation, Dr. James L. Gould and Carol Grant Gould explore the mathematical and physical underpinnings of what it takes for these species to successfully navigate.
'Time pollution': loss of predators pushes nocturnal fish to take advantage of the day
(06/25/2012) Nocturnal fish—which sport big eyes for improved night vision—are taking back the day in the coral reefs of the Tabuaeran Atoll, according to a new study in the open-access journal PLoS ONE. Overfishing has plundered the Pacific atoll of many of its notable predators, including sharks and barracudas, causing ripple effects through the ecosystem. One of these emerging changes appears to be that with less fear of being eaten, nocturnal fish are increasingly venturing out during the day.
Featured video: baby hornbills grow up in a jar
(05/29/2012) A researcher in Malaysia has captured footage of Oriental pied hornbills (Anthracoceros albirostris) raising chicks in an earthen jar in the Kenyir rainforest of Malaysia. The first video shows the father Oriental pied hornbill feeding the chicks, while the second shows a chick leaving its nest.
New frog species leaves scientists' fingers yellow
(05/22/2012) A beautiful, yellow frog species has been discovered in western Panama, according to a new paper in ZooKeys. Scientists were surprised when handling the new species to find their fingers stained bright yellow by its skin, but even after laboratory research the purpose of this dye remains a mystery. The new species, named Diasporus citrinobapheus, is a member of the large rain frog family, whose members skip the tadpole stage and instead are born directly from eggs as tiny froglets.
Jaguar v. sea turtle: when land and marine conservation icons collide
(05/16/2012) At first, an encounter between a jaguar (Panthera onca) and a green sea turtle (Chelonia mydas) seems improbable, even ridiculous, but the two species do come into fatal contact when a female turtle, every two to four years, crawls up a jungle beach to lay her eggs. A hungry jaguar will attack the nesting turtle, killing it with a bite to the neck, and dragging the massive animal—sometime all the way into the jungle—to eat the muscles around the neck and flippers. Despite the surprising nature of such encounters, this behavior, and its impact on populations, has been little studied. Now, a new study in Costa Rica's Tortuguero National Park has documented five years of jaguar attacks on marine turtles—and finds these encounters are not only more common than expected, but on the rise.
Just how far can a polar bear swim?
(05/03/2012) Polar bears (Ursus maritimus) are capable of swimming incredible distances, according to a new study published in Zoology, which recorded polar bears regularly swimming over 30 miles (48 kilometers) and, in one case, as far as 220 miles (354 kilometers). The researchers believe the ability of polar bears to tackle such long-distance swims may help them survive as seasonal sea ice vanishes due to climate change.
Animal picture of the day: Cicada emerging
(04/30/2012) Cicada's are generally large insects with broad heads and transparent wings. The group is known for some species' habitats of staying under ground for up to 17 years before emerging en masse, though many cicada species emerge annually in small groups. Once it emerges, it sheds its exoskeleten and begins to seek out mates. Males produce a loud, distinct sound.
Doing good and staying sane amidst the global environmental crisis
(04/23/2012) Several years ago while teaching a course in environmental science a student raised her hand during our discussion of the circumstances of modern ecological collapse and posed the question, "what happens when there is no more environment?" At the time I had no response and stumbled to formulate some sort of reply based on the typical aseptic, apathetic logic with which we are programmed through education in the scientific tradition: that there will always be some sort of environment, that life has prospered through the five previous mass extinctions and that something will survive. While this may be the case, the time has come for more of us to consider the broader spectrum of what global humanity is facing as the planet’s ecology is decimated.
Sawfish impale, cleave prey with snout
(03/05/2012) Although all seven species of sawfish are nearly extinct, scientists have spent little time studying these vanishing species. However that is changing as a new study in Current Biology sheds light on the sawfishes' most distinguishing feature: its long toothed snout, which gives the fish its name. "I was surprised to see how skilled sawfish are with their saw," said co-author Barbara Wueringer of the University of Queensland in a press release. "They use their saw to impale prey on the rostral teeth by producing several lateral swipes per second."
The camera trap revolution: how a simple device is shaping research and conservation worldwide
(02/14/2012) I must confess to a recent addiction: camera trap photos. When the Smithsonian released 202,000 camera trap photos to the public online, I couldn’t help but spend hours transfixed by the private world of animals. There was the golden snub-monkey (Rhinopithecus roxellana), with its unmistakably blue face staring straight at you, captured on a trail in the mountains of China. Or a southern tamandua (Tamandua tetradactyla), a tree anteater that resembles a living Muppet, poking its nose in the leaf litter as sunlight plays on its head in the Peruvian Amazon. Or the dim body of a spotted hyena (Crocuta crocuta) led by jewel-like eyes in the Tanzanian night. Or the less exotic red fox (Vulpes vulpes) which admittedly appears much more exotic when shot in China in the midst of a snowstorm. Even the giant panda (Ailuropoda melanoleuca), an animal I too often connect with cartoons and stuffed animals, looks wholly real and wild when captured by camera trap: no longer a symbol or even a pudgy bear at the zoo, but a true animal with its own inner, mysterious life.
Tiny tarsier makes big, ultrasonic noise
(02/13/2012) The Philippine tarsier (Tarsius syrichta), a 5-inch tall Southeast Asian primate, has long resembled a ventriloquist's doll. It would open its mouth as though chattering away, but researchers heard nothing. Now, a new study in Biology Letters has found out why: the Philippine tarsier communicates ultrasonically, surpassing all other primates, and nearly all terrestrial mammals, in its ability to create sounds in the upper registry.
Photo: new blue, red, yellow lizard discovered in the Andes
(02/13/2012) Researchers have discovered a new species of lizard in the Peruvian Andes, whose males sport beautiful colors, according to a paper in ZooKeys. The highest-dwelling known species of the genus Potamites, the new lizard, dubbed Potamites montanicola, was found in forest streams at 1,500 to 2,000 meters (4,900 to 6,500 feet). The species was discovered as apart of a biodiversity monitoring program by COGA, a Peruvian fossil fuel company.
Jurassic insect sings again
(02/06/2012) Innovative research has made a long-extinct katydid—which inhabited the world of dinosaurs like stegosaurus, allosaurus, and diplodocus—sing again. The discovery of an incredibly well-preserved fossil of a new species of katydid, dubbed Archaboilus musicus, gave biomechanical experts the opportunity to recreate a song not heard in 165 million years according to new research published in the Proceedings of the National Academy of Sciences (PNAS).
Vampire and bird frogs: discovering new amphibians in Southeast Asia's threatened forests
(02/06/2012) In 2009 researchers discovered 19,232 species new to science, most of these were plants and insects, but 148 were amphibians. Even as amphibians face unprecedented challenges—habitat loss, pollution, overharvesting, climate change, and a lethal disease called chytridiomycosis that has pushed a number of species to extinction—new amphibians are still being uncovered at surprising rates. One of the major hotspots for finding new amphibians is the dwindling tropical forests of Southeast Asia.
Forgotten species: the wild jungle cattle called banteng
(01/31/2012) The word "cattle," for most of us, is the antithesis of exotic; it's familiar like a family member one's happy enough to ignore, but doesn't really mind having around. Think for a moment of the names: cattle, cow, bovine...likely they make many of us think more of the animals' byproducts than the creatures themselves—i.e. milk, butter, ice cream or steak—as if they were an automated food factory and not living beings. But if we expand our minds a bit further, "cattle" may bring up thoughts of cowboys, Texas, herds pounding the dust, or merely grazing dully in the pasture. But none of these titles, no matter how far we pursue them, conjure up images of steamy tropical rainforest or gravely imperiled species. A cow may be beautiful in its own domesticated sort-of-way, but there is nothing wild in it, nothing enchanting. However like most generalizations, this idea of cattle falls to pieces when one encounters, whether in literature or life, the banteng.
Saving the world's biggest river otter
(01/30/2012) Charismatic, vocal, unpredictable, domestic, and playful are all adjectives that aptly describe the giant river otter (Pteronura brasiliensis), one of the Amazon's most spectacular big mammals. As its name suggest, this otter is the longest member of the weasel family: from tip of the nose to tail's end the otter can measure 6 feet (1.8 meters) long. Living in closely-knit family groups, sporting a complex range of behavior, and displaying almost human-like capricious moods, the giant river otter has captured a number of researchers and conservationists' hearts, including Dutch conservationist Jessica Groenendijk.
Frog perfume? Madagascar frogs communicate via airborne pheromones
(01/25/2012) Researchers have found that some frogs in Madagascar communicate by more than just sound and sight: they create distinct airborne pheromones, which are secreted chemicals used for communicating with others. A paper published in Angewandte Chemie International Edition relates that some male members of the Mantellinae family in Madagascar use large glands on their inner thighs to produce airborne pheromones. Interestingly, the pheromones are structurally similar to those produced by insects. Scientists have identified frogs producing water-borne pheromones before, but this is the first instance of airborne.
Economic slowdown leads to the pulping of Latvia's forests
(01/23/2012) The economic crisis has pushed many nations to scramble for revenue and jobs in tight times, and the small Eastern European nation of Latvia is no different. Facing tough circumstances, the country turned to its most important and abundant natural resource: forests. The Latvian government accepted a new plan for the nation's forests, which has resulted in logging at rates many scientists say are clearly unsustainable. In addition, researchers contend that the on-the-ground practices of state-owned timber giant, Latvijas Valsts meži (LVM), are hurting wildlife and destroying rare ecosystems.
Seals, birds, and alpine plants suffer under climate change
(01/11/2012) The number of species identified by scientists as vulnerable to climate change continues to rise along with the Earth's temperature. Recent studies have found that a warmer world is leading to premature deaths of harp seal pups (Pagophilus groenlandicus) in the Arctic, a decline of some duck species in Canada, shrinking alpine meadows in Europe, and indirect pressure on mountain songbirds and plants in the U.S. Scientists have long known that climate change will upend ecosystems worldwide, creating climate winners and losers, and likely leading to waves of extinction. While the impacts of climate change on polar bears and coral reefs have been well-documented, every year scientists add new species to the list of those already threatened by anthropogenic climate change.
Animal picture of the day: dueling green iguanas
(01/03/2012) Found throughout Central and South America and parts of the Caribbean, the green iguana (Iguana iguana) is a large, mostly herbivorous lizard.
New species of frog sings like a bird
(12/12/2011) If you're trudging through the high-altitude rainforests of northern Vietnam and you hear bird song, you might want to check the trees for frogs. Yes, that's right: frogs. A new species of tree frog has been discovered in Vietnam that researchers say has a uniquely complex call that makes it sound more like a bird than a typical frog. Discovered in Pu Hoat Proposed Nature Reserve, the new species, dubbed Quang's tree frog (Gracixalus quangi), dwells in the forests at an altitude 600-1,300 meters (nearly 2,000-4,265 feet).
Small mammals use Borneo pitcher plant as toilet in exchange for nectar
(11/08/2011) Tree shrews and nocturnal rats in the forests of Borneo have a unique relationship with carnivorous pitcher plants. The mammals defecate, and the pitchers are happy to receive. A study published on May 31 in the Journal of Tropical Ecology shows a species of giant mountain pitcher plants (Nepenthes rajah) supplements its diet with nitrogen from the feces of tree shrews (Tupaia montana) that forage in daylight and summit rats (Rattus baluensis) active at night. When the small mammals lick nectar from the underside of the pitcher’s lid, they stand directly over the jug-shaped pitcher organ.
Rat uses 'poison arrow' toxin from tree to defend against predators
(08/02/2011) The African crested rat, a rodent from East Africa, applies to plant toxin from tree bark to make itself poisonous, reports a new study published in Proceedings of The Royal Society B..
Pictures: Researchers to track proboscis monkey in Borneo by satellite
(07/24/2011) Researchers with the Sabah Wildlife Department and Danau Girang Field Center in Malaysia have become the first to fit a proboscis monkey with a satellite tag.
Fish use tools
(07/17/2011) A blackspot tuskfish (Choerodon schoenleinii) has been photographed picking up a clam in its mouth, swimming over to a rock, and then using the rock as an anvil by smashing the clam against it until it breaks open. In the journal Coral Reefs scientists argue this is the first conclusive evidence of a fish using tools. Once thought only the domain of humans, biologists have found that tool use is actually present all over the animal kingdom, from elephants to chimps, and crows to capuchins. Such tool use is often considered evidence of higher intelligence.
Brainy lizards rival birds in intelligence
(07/13/2011) Reptiles have long been thought to be dim-witted, but a new study in Biology Letters finds that the Puerto Rican anole, a type of lizard, can match birds in smarts. Using cognitive tests that have been previously used on birds, researchers with Duke University found that the lizards were capable of solving a problem they've never encountered before, remembering the solution in future trials, and even changing techniques when presented with new challenges. In fact, the tiny anoles solved the test with fewer tries than birds. Given reptiles' reputation of being slow-on-the uptake the head author, Manuel Leal, said the findings are 'completely unexpected'.
World's 'most social' lizard builds multigenerational homes
(05/31/2011) Researchers from Macquarie University in Australia have discovered that the threatened great desert burrowing skink lizard forms stable families that construct and maintain elaborate underground homes, reports ABC News. This is the first lizard in the world known to practice such familial behavior. Native to central Australia, researchers are conducting studies on the great desert skink (Liopholis kintorei) at Uluru Kata-Tjuta National Park, where rangers monitor the threatened species. Over 5,000 species of lizard have been documented globally, but only the Uluru skinks live together in immediate and social families that invest in the construction of long-lasting homes.
Uncovering the private lives of Amazon wildlife through camera traps
(05/20/2011) One of the best words to describe Amazon wildlife, including large mammals and birds, is cryptic. A person can spend a day trekking through the dense green and brown foliage of the Amazon and see nothing more than a few insects, maybe a frog here and there if they have good eyes. In fact, researchers have spent years in the jungle and never seen a jaguar, let alone a tapir. Some species like the bushdog and the giant armadillo are even more cryptic. Almost never encountered by people, in some parts of the Amazon they have taken on a mythic status, more rumor around the fire than reality. However, camera traps—automated cameras that take a flash photo whenever an animal triggers an infrared sensor—in the Amazon have begun to reveal long-sought information about the presence and abundance of species, providing new data on range and territories. And even at times giving glimpses into the private lives of species that remain largely shrouded in mystery.
Forgotten species: the endearing Tenkile tree kangaroo
(05/03/2011) With their long snout, furry body, soft eyes, and, at times, upright stance, tree kangaroos often remind me of the muppets. Of course, if there were any fairness in the world, the muppets would remind me of tree kangaroos, since kangaroos, or macropods, have inhabited the Earth for at least 5 million years longer than Jim Henson’s muppets. But as a child of the 1980s, I knew about muppets well before tree kangaroos, which play second fiddle in the public imagination to their bigger, boxing cousins. This is perhaps surprising, as tree kangaroos possess three characteristics that should make them immensely popular: they are mammals, they are monkey-like (and who doesn't like monkeys?), and they are desperately 'cute'.
With 24 eyes, box jellyfish are constantly looking up
(04/28/2011) Lacking brains does not mean box jellyfish are incapable of complex visual behavior, according to a new study in Current Biology. Researchers have known for over a century that box jellyfish support an astounding two-dozen eyes. Now, they are beginning to find out how these eyes are used: four of a box jellyfish's 24 eyes are always peering up out of the water finds the new study. These four eyes, no matter how the body is oriented, allow the jellyfish to navigate their shallow, obstacle-filled habitats, such as mangroves—and keep them from straying too far from home.
Elephants: the gardeners of Asia's and Africa's forests
(04/25/2011) It seems difficult to imagine elephants delicately tending a garden, but these pachyderms may well be the world's weightiest horticulturalist. Elephants both in Asia and Africa eat abundant amounts of fruit when available; seeds pass through their guts, and after expelled—sometimes tens of miles down the trail—sprouts a new plant if conditions are right. This process is known by ecologists as 'seed dispersal', and scientists have long studied the 'gardening' capacities of monkeys, birds, bats, and rodents. Recently, however, researchers have begun to document the seed dispersal capacity of the world's largest land animal, the elephant, proving that this species may be among the world's most important tropical gardeners.
Giant fish help grow the Amazon rainforest
(04/12/2011) A fruit in the flooded Amazon falls from a tree and plops in the water. Before it can even sink to the floor, a 60-pound monster fish with a voracious appetite gobbles it. Nearly a week later—and miles away—the fish expels its waste, including seeds from the fruit eaten long ago and far away. One fortunate seed floats to a particularly suitable spot and germinates. Many years later the new fruit tree is thriving, while the same monster-fish returns from time-to-time, waiting for another meal to drop from the sky. This process is known as seed-dispersal, and while researchers have studied the seed-dispersal capacity of such species as birds, bats, monkeys, and rodents, one type of animal is often overlooked: fish.
The value of the little guy, an interview with Tyler Prize-winning entomologist May Berenbaum
(04/06/2011) May Berenbaum knows a thing or two about insects: in recognition of her lifelong work on the interactions between insects and plants, she has had a character on The X-Files named after her, received the Public Understanding of Science and Technology Award for her work in making science accessible to the public, and this year has been awarded the prestigious Tyler Environmental Prize. "Winning the Tyler Prize is an incredible honor—most of my scientific heroes have been Tyler Prize winners and I’m exceedingly grateful to be considered worthy of being included among their ranks," Berenbaum told mongabay.com in an interview. "The Prize is also tremendously enabling—because the money is unrestricted I can use it to carry out projects that have been difficult to fund."
Pet trade, palm oil, and poaching: the challenges of saving the 'forgotten bear'
(03/20/2011) Siew Te Wong is one of the few scientists who study sun bears (Ursus malayanus). He spoke with Laurel Neme on her "The WildLife" radio show and podcast about the interesting biological characteristics of this rare Southeast Asian bear, threats to the species and what is being done to help them. Sun bears are the smallest of the eight bear species. They’re about half the size of a North American black bear and typically sport a tan crescent on their chests. Similar to the "moon bear," or Asian black bear, the sun bear’s name comes from this marking, which looks like a rising or setting sun.
Fearful Symmetry—Man Made, an interview with John Vaillant, author of The Tiger
(03/14/2011) In The Tiger, John Vailliant weaves a haunting and compelling true narrative of men who live—or die—with tigers. No doubt the story itself is on-the-edge of your seat reading. As well, the book provides factual information on the 400 or so Amur Tigers remaining, and the raw milieu that is Primorye, Far East Russia—a wilderness and people unto their own. What is special, transcendent even in this story, however, murmurs uncomfortably in the background. Questions emerge from deep taiga snow, not unlike the unseen Panchelaza Tiger. What exactly is our relationship with apex predators? How do people live with them? How would you live with them in your backyard? What if your pet dog disappeared? As we ourselves are apex predators, are we wise enough, tolerant enough, compassionate enough to share this planet with them? Evidence today points to the contrary, but this can change.
Critically endangered capuchins make tools to gather termites
(03/10/2011) Less than 200 blond capuchins (Cebus falvius) survive in the highly-fragmented habitat of Brazil's Atlantic Forest. But this tiny group of monkeys, only rediscovered in 2006, is surprising scientists with its adept tool-using abilities. Displaying similar behavior to that which made the chimpanzees of Gombe famous worldwide, the blond capuchins modify sticks to gather termites from trees; however, according to the study published in Biology Letters the blond capuchins use two techniques never witnessed before: twisting the stick when inside the termite nest and tapping the nest before inserting the stick.
Photos: two new freshwater stingrays discovered in the Amazon
(03/09/2011) Few people probably realize that in the rivers and lakes of the Amazon rainforest large stingrays glide, searching for crustaceans and small fish. Equipped with a powerful barbed tail they are often feared by locals. However, even as big as these fish are, new species continue to be described. Recently, scientists have identified two new species of Amazonian freshwater stingray near Iquitos, Peru. The new stingrays are unique enough to be placed in a new genus (the taxonomic level above species) called Heliotrygon, the first new Amazonian stingray genus to be described in nearly 25 years.
Birds experience 'empathy' for their hatchlings
(03/09/2011) A new study has uncovered what many chicken owners would say is evident: a mother hen experiences empathy for her hatchlings. Published in the Proceedings of the Royal Society B, the study found that mother hens show both physiological responses and changes in behaviors when their chicks are even mildly distressed.
Elephants cooperate as well as chimps
(03/07/2011) A new study proves that elephants understand how sometimes two is better than one. Working with Asian elephants (Elephas maximus) at the Thai Elephant Conservation Center, researchers reconstructed a classic cooperation test that was originally developed for chimpanzees. Subjects must pull on a rope to receive a reward, such as food, however—and here's the crux—the treat is only released if two subjects cooperate by pulling on two different ropes simultaneously. The paper published in Proceedings of the National Academy of Sciences found that elephants were as capable of cooperation as chimpanzees.
New species of zombie-creating fungi discovered
(03/02/2011) As everyone knows, human zombies are created when an uninfected human is bitten by a member of the brain-craving undead. But what about ant zombies? Yes, that's right: ant zombies.
Saving Madagascar's largest carnivorous mammal: the fossa
(02/17/2011) Madagascar is a land of wonders: dancing lemurs, thumbnail-sized chameleons, the long-fingered aye-aye, great baobab trees, and the mighty fossa. Wait—what? What's a fossa? It's true that when people think of Madagascar rarely do they think of its top predator, the fossa—even if they are one of the few who actually recognizes the animal. While the fossa gained a little notice in the first Madagascar film by DreamWorks, its role in the film was overshadowed by the lemurs. In this case, art imitates life: in conservation and research this feline-like predator has long lived in the shadow of its prey, the lemur. Even scientists are not certain what to do with the fossa: studies have shown that it's not quite a cat and not quite a mongoose and so the species—and its few Malagasy relatives—have been placed in their own family, the Eupleridae, of which the fossa (Cryptoprocta ferox) is the biggest. But if this is the first you've heard of such matter, don't feel bad: one of the world's only fossa-researchers, Mia-Lana Lührs also stumbled on the species.
A lion's story, an interview with the filmmakers of The Last Lions
(02/14/2011) The new theatrical film, The Last Lions does not open, as one would expect, with a shot of lions or even an African panorama. Instead the first shot is a view of our planet from space at night. Billions of artificial lights illuminate continent showing just how much humans over the past few thousand years have come to dominate our world. Then comes the lions, but not in person, just in this staggering, and little known, statistic: in the last 50 years we have gone from a population of 450,000 lions to 20,000 today, a 95% decline. While the dramatic story of the The Last Lions follows the perils and tragedies of lion motherhood in one of the world's last untouched places—the Okavango Delta—this statistic hangs over the film, reminding us that the story we are witnessing is on the verge of extinction.
Tiny bats trade in caves for pitcher plants in Borneo
(01/26/2011) A tiny species of bat in Borneo has chosen an unusual roost: a carnivorous pitcher plant, according to a recent study. The study examines how this behavior actually benefits both the bats and the plants, creating a symbiotic relationship.
King of dinosaurs was a hunter, not a scavenger
(01/26/2011) Ecologists say they have used a computer model to put to rest a nearly century-old debate. Did Tyrannosaurus Rex, one of the world's most well-known dinosaurs, hunt down its prey like a lion on the plains, or, instead, did it scavenge meals from other hunters like a vulture? According to scientists with the Zoological Society of London (ZSL) the Tyrannosaurus had only one choice in order to survive: hunt.
Using water bodies to track Asian elephants
(12/19/2010) One would think that it would be easy to track Asia's largest land animal, but in fact Asian elephants (Elephas maximus) are generally shy, mostly nocturnal, and stick to the forest whenever possible. Yet, it's vital for conservationists to track the herd, if they are to keep them safe from poaching and protect both elephants and locals from potential conflict. However, a new study in mongabay.com's open access journal Tropical Conservation Science has developed a unique strategy to track elephant herds in Sri Lanka by sticking to the water.
How cannibal crickets choose their victims
(12/17/2010) Social interactions influence cannibalistic behavior among migratory bands of crickets, finds a new study published in the Public Library of Science. Cannibalism in turn is a major driving force behind the nature and direction of cricket swarms.
Deforestation sparks giant rodent invasions
(12/15/2010) Capybara are expanding into areas of deforestation throughout South America, reports a new study conducted by Kansas State University researchers and published in the journal of Global Change Biology. The study is the first to report capybara populations invading historically arid regions and finds that the presence of invasive capybara can hinder habitat restoration.
Cheetahs reproduce more successfully after early pregnancies
(11/15/2010) Early pregnancies prepare a cheetah for a life of productive motherhood, new research shows. A study published on 20 September in Conservation Letters advises captive breeding programs to focus on breeding female cheetahs at young ages to set the stage for many litters throughout their lives. The world's fastest animal, the cheetah has not outpaced a disheartening march toward extinction. Populations have declined from an estimated 100,000 a century ago to about 13,000 today. For years, researchers have pointed to the high genetic similarities among individual cheetahs as the main reason why captive cheetahs don't often get pregnant.
Saving the best for last: a journey into the final phases of orangutan rehabilitation
(11/08/2010) Rehabilitation is a powerful word these days. Fashionable, too. In wildlife conservation, rehabilitation can serve functions ranging from augmenting threatened animal populations to desperate attempts to save species from permanent extinction. At its base, rehabilitation consists of handling, preparing and releasing wild animals that have been in some way negatively affected by humans. Rehabilitation programs cover the globe (from cottage-scale sparrow and raccoon rescues in suburban parks to well-established raptor protection programs, wolf rehabilitation and public education about these wild predators in Colorado, semi-touristy rehabilitation centers in Thailand housing everything from gibbons to elephants, vet hospitals dedicated to flu-ridden bobtail lizards in Australia, and sexy lion and cheetah hubs in southern Africa which breed endangered serval cats). The motivations behind these programs are also diverse, but the umbrella goal is unified: to aid the continued survival, so often precarious, of animals valued by people.
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