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Rat

50 species

Stenomys Thomas, 1910

Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus. Many members of other rodent genera and families are also called rats and share many characteristics with true rats.

Rats are typically distinguished from mice by their size; rats are generally large muroid rodents, while mice are generally small muroid rodents. The muroid family is very large and complex, and the common terms rat and mouse are not taxonomically specific. Generally, when someone discovers a large muroid, its common name includes the term rat, while if it is small, the name includes the term mouse - scientifically, the terms are not confined to members of the Rattus and Mus genera. Compare the taxonomic classification of the Pack rat and Cotton mouse.

This text uses material from Wikipedia and is available under the GNU Free Documentation License.


Evidence that brains re-wire themselves following damage or injury

(Medical Xpress)—Scientists from the United States and Australia have advanced our understanding of brain plasticity by showing that the brain forms complex new circuits after damage, often far from the ...

Neuroscience created May 15, 2013 | popularity 4.3 / 5 (8) | comments 0 | with audio podcast

New test methods can reduce the amount of animal testing

Making more use of in-vitro testing, the upcoming 21st-century scientific fields known as 'omics' sciences and developing smart test strategies can clearly reduce the amount of essential animal testing. This ...

Medical research created May 07, 2013 | popularity 4.5 / 5 (2) | comments 0

Vicious cycle: Obesity sustained by changes in brain biochemistry

With obesity reaching epidemic levels in some parts of the world, scientists have only begun to understand why it is such a persistent condition. A study in the Journal of Biological Chemistry adds substantially to the st ...

Medical research created May 16, 2013 | popularity 3 / 5 (2) | comments 2 | with audio podcast

Forced exercise may still protect against anxiety and stress, study says

Being forced to exercise may still help reduce anxiety and depression just as exercising voluntarily does, according to a new study by researchers at the University of Colorado Boulder.

Health created Apr 25, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

The biology behind binge eating

Female rats are much more likely to binge eat than male rats, according to new research that provides some of the strongest evidence yet that biology plays a role in eating disorders.

Diseases, Conditions, Syndromes created May 01, 2013 | popularity 5 / 5 (1) | comments 0

Rats take high-speed multisensory snapshots

When animals are on the hunt for food they likely use many senses, and scientists have wondered how the different senses work together. New research from the laboratory of CSHL neuroscientist and Assistant Professor Adam ...

Neuroscience created May 07, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Researchers find far-reaching, microvascular damage in uninjured side of brain after stroke

While the effects of acute stroke have been widely studied, brain damage during the subacute phase of stroke has been a neglected area of research. Now, a new study by the University of South Florida reports that within a ...

Neuroscience created May 20, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast