News tagged with rodent
House mice put endangered petrels at risk of extinction
Common house mice are demolishing what could be the only breeding population of endangered Atlantic petrels in the world, scientists have found.
May 16, 2012 |
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Big-mouthed babies drove the evolution of giant island snakes
Some populations of tiger snakes stranded for thousands of years on tiny islands surrounding Australia have evolved to be giants, growing to nearly twice the size of their mainland cousins. Now, new research ...
May 15, 2012 |
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When to have kids: A complex question for hazel dormice
Claudia Bieber from the Research Institute of Wildlife Ecology (FIWI) of the University of Veterinary Medicine, Vienna, and fellow scientists analysed a capture-recapture data set on common dormice (Muscardinus avellanarius) to inv ...
Apr 27, 2012 |
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Wild birds respond differently to the first long days of a year
The lengthening of days in late winter is an important signal that stimulates the reproductive activity of many animals. Animals living in the milder climatic conditions of southern Europe usually begin breeding ...
Apr 24, 2012 |
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Magnetic nanochain detonates chemo barrage inside tumors
Medicine-toting nanochains slip into tumors and explode a chemotherapy drug into hard-to-reach cores of cancer, engineers and scientists at Case Western Reserve University report.
Nanotechnology / Bio & Medicine
Apr 18, 2012 |
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New study traces the evolutionary history of what mammals eat
The feeding habits of mammals haven't always been what they are today, particularly for omnivores, finds a new study.
Apr 16, 2012 |
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Huge hamsters and pint-sized porcupines thrive on islands
From miniature elephants to monster mice, and even Hobbit-sized humans, size changes in island animals are well-known to science. Biologists have long believed that large animals evolving on islands tend to get smaller, while ...
Mar 23, 2012 |
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Some mammals used highly complex teeth to compete with dinosaurs: study
Conventional wisdom holds that during the Mesozoic Era, mammals were small creatures that held on at life's edges. But at least one mammal group, rodent-like creatures called multituberculates, actually flourished ...
Other Sciences / Archaeology & Fossils
Mar 14, 2012 |
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Why bats, rats and cats store different amounts of fat
Animals differ in the amount of fat they carry around depending on their species, status and sex. However, the causes of much of this variation have been a mystery. The Bristol study shows that many differences can be understood ...
Jan 20, 2012 |
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Ruthless boas know when to ditch their squeeze
Boa constrictors can sense the heartbeat of their quarry as they suffocate it, thus giving themselves the signal to know when the prey is dead, scientists say.
Jan 18, 2012 |
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Pig-induced pluripotent stem cells may be safer than previously thought
Pig stem cell research conducted by two animal scientists at the University of Georgia reveals a better way to determine the safety of future stem cell therapies than rodent-based models.
Dec 09, 2011 |
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Helping your fellow rat: Rodents show empathy-driven behavior
The first evidence of empathy-driven helping behavior in rodents has been observed in laboratory rats that repeatedly free companions from a restraint, according to a new study by University of Chicago neuroscientists.
Dec 08, 2011 |
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Whiskers marked milestone in evolution of mammals from reptiles
Research from the University of Sheffield comparing rats and mice with their distance relatives the marsupial, suggests that moveable whiskers were an important milestone in the evolution of mammals from reptiles.
Nov 10, 2011 |
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Earliest Democricetodon (Cricetid rodent) found in the Early Miocene of the Junggar Basin, China
According to a paper published in the latest issue of Vertebrata PalAsiatic 2011(4), palontologists from Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, have identi ...
Other Sciences / Archaeology & Fossils
Nov 09, 2011 |
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New research challenges evolutionary theory
(PhysOrg.com) -- New research from the University of Reading overturns conventional views on the nature of evolution, arguing that mammals did not develop into their many different forms in one early and rapid ...
Oct 20, 2011 |
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Rodent
Sciuromorpha Castorimorpha Myomorpha Anomaluromorpha Hystricomorpha
Rodentia is an order of mammals also known as rodents, characterised by two continuously growing incisors in the upper and lower jaws which must be kept short by gnawing.
Forty percent of mammal species are rodents, and they are found in vast numbers on all continents other than Antarctica. Common rodents include mice, rats, squirrels, chipmunks, gophers, porcupines, beavers, hamsters, gerbils, guinea pigs, degus, chinchillas, prairie dogs, and groundhogs. Rodents have sharp incisors that they use to gnaw wood, break into food, and bite predators. Most eat seeds or plants, though some have more varied diets. Some species have historically been pests, eating seeds stored by people and spreading disease.
For more information about Rodent, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
