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Male or Female? First Sex Determining Genes Appeared in Mammals Some 180 Million Years Ago
Apr. 23, 2014 — The Y chromosome, which distinguishes males from females at the genetic level, appeared some 180 million years ago. It originated twice independently in all mammals. Scientists have managed to date ... full story -
Scientists Identify Source of Mysterious Sound in the Southern Ocean
Apr. 23, 2014 — Scientists have conclusive evidence that the source of a unique rhythmic sound, recorded for decades in the Southern Ocean and called the 'bio-duck,' is the Antarctic minke whale ... full story -
How Australia's Outback Got One Million Feral Camels: Camels Culled on Large Scale
Apr. 23, 2014 — A new study has shed light on how an estimated one million-strong population of wild camels thriving in Australia's remote outback have become reviled as pests and culled on a large ... full story -
Cougars’ Diverse Diet Helped Them Survive the Mass Extinction That Wiped out the Saber-Tooth Cat, American Lion
Apr. 22, 2014 — Cougars may have survived the mass extinction that took place about 12,000 years ago because they were not particular about what they ate, unlike their more finicky cousins the saber-tooth cat and ... full story -
Brain Size Matters When It Comes to Animal Self-Control
Apr. 22, 2014 — Chimpanzees may throw tantrums like toddlers, but their total brain size suggests they have more self-control than, say, a gerbil or fox squirrel, according to a new study of 36 species of mammals ... full story -
Ancient DNA: Barnyard Chickens Living Just a Few Hundred Years Ago Looked Far Different from Today's Chickens
Apr. 18, 2014 — Ancient DNA adds a twist to the story of how barnyard chickens came to be. Analyzing DNA from the bones of chickens that lived 200-2,300 years ago in Europe, researchers report that some of the ... full story -
The Story of Animal Domestication Retold: Scientists Now Think Wild Animals Interbred With Domesticated Ones Until Quite Recently
Apr. 17, 2014 — A review of recent research on the domestication of large herbivores suggests that neither intentional breeding nor genetic isolation were as significant as traditionally thought. "Our findings ... full story -
NutNet: New Model for Global Research
Apr. 16, 2014 — What do zebra and kangaroos have in common? At first glance, not much -- they aren’t even found in the same part of the world. But here’s one thing they do share: Both are part of the Nutrient ... full story -
Diverse Gene Pool Critical for Tigers' Survival, Say Experts
Apr. 16, 2014 — Increasing tigers' genetic diversity -- via interbreeding and other methods -- and not just their population numbers may be the best solution to saving this endangered species, according to ... full story -
Lemurs Match Scent of a Friend to Sound of Her Voice
Apr. 15, 2014 — Scientists report that ring-tailed lemurs respond more strongly to the scents and sounds of female lemurs when the scent they smell and the voice they hear belong to the same female -- even when ... full story -
Mouse Model Would Have Predicted Toxicity of Drug That Killed 5 in 1993 Clinical Trial
Apr. 15, 2014 — Over 20 years after the fatal fialuridine trial, a new study demonstrates that mice with humanized livers recapitulate the drug's toxicity. The work suggests that this mouse model should be ... full story -
Dog Ownership Benefits Families of Children With Autism
Apr. 14, 2014 — Dog ownership decisions in families of children with autism have been studied in a new project. Researchers have found, regardless of whether they owned dogs, the parents of these children reported ... full story -
Wolves at the Door: Study Finds Recent Wolf-Dog Hybridization in Caucasus Region
Apr. 14, 2014 — Hybridization of wolves with shepherd dogs in the Caucasus region might be more common, and more recent, than previously thought, according to new research. Scientists found recent hybrid ancestry in ... full story -
Sharks Contain More Pollutants Than Polar Bears
Apr. 11, 2014 — The polar bear is known for having alarmingly high concentrations of PCB and other pollutants. But researchers have discovered that Greenland sharks store even more of these contaminants in their ... full story -
Taming of the Shrew: Bicolored Shrew a Health Risk for Horses
Apr. 11, 2014 — The bicolored shrew is a protected species in Central Europe, but these furry insect-eaters have a dark secret. Researchers have discovered that bicolored shrews carry the Borna virus. Infection with ... full story -
Experts Disagree on Horses With Incoordination
Apr. 10, 2014 — At least one in 100 horses at some point in its life will lose the ability to control its gait as a result of developing the neurological disorder ataxia. Once found to be ataxic, the horse is often ... full story -
Camels Emit Less Methane Than Cows or Sheep
Apr. 10, 2014 — When digesting ruminants exhale methane. Their contribution to this global greenhouse gas is considerable. So far the assumption had been that camels with similar digestion produce the same amount of ... full story -
Rare Leafcutter Bee Fossils Reveal Ice Age Environment at the La Brea Tar Pits
Apr. 9, 2014 — The La Brea Tar Pits are celebrated for saber-toothed cats and mastodons. The site's insect collection is also of great significance. Recent examination of fossil leafcutter bee nest cells ... full story -
Extinct Carnivorous Marsupial May Have Hunted Prey Larger Than Itself
Apr. 9, 2014 — The reconstruction of an extinct meat-eating marsupial's skull, Nimbacinus dicksoni, suggests that it may have had the ability to hunt vertebrate prey exceeding its own body ... full story -
Skull Malformations in Lions: Keeping Up the Pressure
Apr. 9, 2014 — Scientists have examined the incidence of skull malformations in lions, a problem known to be responsible for causing neurological diseases and increased mortality. Their results suggest that the ... full story
- Male or female? First sex determining genes appeared in mammals some 180 million years ago
- Scientists identify source of mysterious sound in the Southern Ocean
- How Australia's Outback got one million feral camels: Camels culled on large scale
- Cougars’ diverse diet helped them survive the mass extinction that wiped out the saber-tooth cat, American lion
- Brain size matters when it comes to animal self-control
- Lemurs match scent of a friend to sound of her voice
- Mouse model would have predicted toxicity of drug that killed 5 in 1993 clinical trial
- Dog ownership benefits families of children with autism
- Wolves at the door: Study finds recent wolf-dog hybridization in Caucasus region
- Sharks contain more pollutants than polar bears
- Taming of the shrew: Bicolored shrew a health risk for horses
- Rare leafcutter bee fossils reveal Ice Age environment at the La Brea Tar Pits
- Extinct carnivorous marsupial may have hunted prey larger than itself
- Skull malformations in lions: Keeping up the pressure
- Skulls of red and giant pandas provide insight into coexistence
- Going batty for jumping DNA as a cause of species diversity
- Will roe deer persist? Climate change spells disaster for species unable to keep up
- Scientists solve the riddle of zebras' stripes: Those pesky bugs
- Core skin bacterial community in humpback whales
- Cuvier's beaked whales set new breath-hold diving records: Whales dive to nearly two miles depth, for over two hours
- Indian rhinoceroses: Reproductive tract tumors reduce female fertility in early stages
- Bamboo-loving giant pandas also have a sweet tooth
- Mosquito season unpredictable; year-round heartworm prevention is best
- Goats are far more clever than previously thought, and have an excellent memory
- Study yields 'Genghis Khan' of brown bears, and brown and polar bear evolution
- Biologists use sound to identify breeding grounds of endangered whales
- Inbreeding in woolly mammoths: Neck rib provide clues about decline and eventual extinction
- Passive acoustic monitoring reveals clues to minke whale calling behavior and movements
- Excessive deer populations hurt native plant biodiversity
- Bighorn sheep went extinct on desert island in Gulf of California
- Sometimes less is more for hungry dogs
- Cultural hitchhiking: How social behavior can affect genetic makeup in dolphins
- Owl monkeys don't cheat: Intensive fathering plays a role
- Form of epilepsy in sea lions similar to that in humans, researchers find
- How the science of deer hunting can help patients with diabetes
- Why did humans replace Neanderthals? Paleo diet didn't change, the climate did
- New fossil species: Origin of toothed whale echolocation
- Dingo poisoning should be stopped to protect native Australian mammals
- New fossil find: Precursor of European rhinos found in Vietnam
- Yosemite bears and human food: Study reveals changing diets over past century
- Humans responsible for 62% of cougar deaths in re-established populations
- Bison ready for new pastures? Protocol used to demonstrate brucellosis-free bison from infected herds
- Nasty parasitic worm, common in wildlife, now infecting U.S. cats
- Livestock beating pandas to the bamboo buffet
- Male goat essence really turns the females on
- Spotted seal study reveals sensitive hearing in air and water
- Whales, ships more common through Bering Strait
- Mass strandings of marine mammals blamed on toxic algae: Clues unearthed in ancient whale graveyard
- MERS virus widespread in Saudi Arabian camels: Coronavirus has been infecting the animals for at least 20 years
- Ceausescu's flying bears: Molecular genetics provides evidence for an unusual dispersal mode in European brown bears
- Fruit-loving lemurs score higher on spatial memory tests
- Newly discovered marsupial the victim of fatal attraction: Due to stress hormone, males die before young are born
- Saving lemurs: Action plan devised to save Madagascar's 101 lemur species
- Compound improves cardiac function in mice with genetic heart defect, study finds
- Seal evolution: Sexual dimorphism in pinnipeds arose around 27 million years ago as climate changed
- Endangered black-footed ferret and its plague-impacted prey need new conservation approaches
- Cheaper, more efficient method for detecting leishmaniosis developed
- Wings, tails, fins: Study looks at how animals propel themselves
- Asian elephants reassure others in distress: First empirical evidence of consolation in elephants
- Arctic marine mammals are ecosystem sentinels
- Cat parasite found in western Arctic Beluga deemed infectious
- Why did the orangutan come down from the trees?
- Whales viewed from space: Satellite technology can be used to count whales
- From surf to turf: Archaeologists and chemists trace ancient British diets
- Poaching threatens savannah ecosystems
- How do polar bears stay warm? Research finds an answer in their genes
- Clinical pharmacologist researching chronic lead intoxication in goats
- Threatened eels disappear in the deep ocean on their way to the Sargasso Sea
- Female mice prefer unfamiliar male songs: Females discern male mouse songs to avoid inbreeding
- Whales and human-related activities overlap in African waters
- A 'smoking gun' on Ice Age megafauna extinctions
- Strange marine mammals of ancient North Pacific revealed
- Researchers discover rare new species of deep-diving whale
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