Animal
hideAnimals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. Most animals are also heterotrophs, meaning they must ingest other organisms for sustenance.
Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago.
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News tagged with animals
Study says eyes evolved for X-Ray vision
Biology /
Aug 28, 2008 |
2.9 / 5 (190) |
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The advantage of using two eyes to see the world around us has long been associated solely with our capacity to see in 3-D. Now, a new study from a scientist at Rensselaer Polytechnic Institute has uncovered ...
Increasing carbon dioxide and decreasing oxygen make it harder for deep-sea animals to 'breathe'
Space & Earth / Earth Sciences
Apr 17, 2009 |
4.8 / 5 (78) |
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(PhysOrg.com) -- New calculations made by marine chemists from the Monterey Bay Aquarium Research Institute (MBARI) suggest that low-oxygen "dead zones" in the ocean could expand significantly over the next ...
Extinct goat was cold-blooded
Nov 18, 2009 |
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(PhysOrg.com) -- An extinct goat that lived on a barren Mediterranean island survived for millions of years by reducing in size and by becoming cold-blooded, which has never before been discovered in mammals.
Trichoplax genome sequenced -- 'rosetta stone' for understanding evolution
Biology /
Sep 03, 2008 |
4.9 / 5 (34) |
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(PhysOrg.com) -- Yale molecular and evolutionary biologists in collaboration with Department of Energy scientists produced the full genome sequence of Trichoplax, one of nature's most primitive multicellular organi ...
Bigger not necessarily better, when it comes to brains
Nov 17, 2009 |
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(PhysOrg.com) -- Tiny insects could be as intelligent as much bigger animals, despite only having a brain the size of a pinhead, say scientists at Queen Mary, University of London.
Scientist Discovers New Molecule to Treat Chronic Pain
Aug 12, 2008 |
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(PhysOrg.com) -- Northeastern University Pharmaceutical Sciences professor and Center for Drug Discovery director Alexandros Makriyannis and a team of researchers have created a synthetic molecule that could be used to treat ...
Disappearing act of world's second largest fish explained
May 07, 2009 |
4.9 / 5 (15) |
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Researchers have discovered where basking sharks - the world's second largest fish - hide out for half of every year, according to a report published today in Current Biology. The discovery revises scient ...
Plastics in oceans decompose, release hazardous chemicals, surprising new study says
Aug 19, 2009 |
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In the first study to look at what happens over the years to the billions of pounds of plastic waste floating in the world's oceans, scientists are reporting that plastics -- reputed to be virtually indestructible ...
Unique fossils capture 'Cambrian migration'
Other Sciences / Archaeology & Fossils
Oct 10, 2008 |
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(PhysOrg.com) -- A unique set of fossils indicates that 525 million years ago marine animals congregated in Earth’s ancient oceans, most likely for migration, according to an international team of scientists.
Fossil evidence of missing link in the origin of seals, sea lions, walruses found in Canadian Arctic
Other Sciences / Archaeology & Fossils
Apr 22, 2009 |
4.8 / 5 (13) |
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(PhysOrg.com) -- Researchers from the United States and Canada have found a fossil skeleton of a newly discovered carnivorous animal, Puijila darwini. New research suggests Puijila is a "missing link" in the ...
First ever worldwide census of caribou and reindeer reveals a dramatic decline
Jun 29, 2009 |
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(PhysOrg.com) -- Caribou and reindeer numbers worldwide have plunged almost 60 per cent in the last three decades.
Touching research: To improve robots, researcher eyes jellyfish
Biology /
Jul 10, 2008 |
4.8 / 5 (12) |
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(PhysOrg.com) -- Biology professor Joseph Ayers is expanding his research on animals’ nervous systems that produced the RoboLobster and RoboLamprey to include a study on tactile sensory perception in jellyfish ...
Move over, sponges: New evidence confirms Placozoans are the closest living surrogate to the ancestor of all animals
Biology /
Jan 27, 2009 |
4.8 / 5 (12) |
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A new and comprehensive analysis confirms that the evolutionary relationships among animals are not as simple as previously thought. The traditional idea that animal evolution has followed a trajectory from ...
Aging impairs the 'replay' of memories during sleep
Jul 29, 2008 |
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Aging impairs the consolidation of memories during sleep, a process important in converting new memories into long-term ones, according to new animal research in the July 30 issue of The Journal of Neuroscience. The findin ...
Mockingbirds, no bird brains, can recognize a face in a crowd
May 18, 2009 |
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(PhysOrg.com) -- The birds are watching. They know who you are. And they will attack. Nope, not Hitchcock. It's science.
