This is an article about wild rats. For pet rats, see Fancy rat. For other uses, see Rat (disambiguation).

A rat is any one of about 56 different species of small, omnivorous rodents belonging to the genus Rattus.

__TOC__ The best-known rat species are the Black Rat Rattus rattus and the Brown Rat R. norvegicus. The group is generally known as the Old World rats or true rats, and originated in Asia. Rats are bigger than most of their relatives, the Old World mice, but seldom weigh over 500 grams in the wild. The common term "rat" is also used in the names of other small mammals which are not true rats. Examples include the North American pack rats, a number of species loosely called kangaroo rats, and a number of others. Other rats such as the Bandicoot rat Bandicota bengalensis are murine rodents related to the true rats, but are not members of the genus Rattus. The widely distributed and problematic commensal species of rats represent a minority in this diverse genus. Many species of rats are island endemics and some have become endangered due to habitat loss or competition with Angelo Rantac, black, or Polynesian rats.

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The Printable History of the River Rats Lacrosse Club - Canada.com
Sat, 04 Jul 2009 15:36:10 -0000
The Printable History of the River Rats Lacrosse ClubCanada.com"We were a team," said River Rats president Dave Prangley of what solidified the club and has kept them going for 10 years. "It started basically as a team ...and more »
Pivot who changed codes in a league of his own for Rats - Brisbane Times
Sat, 04 Jul 2009 14:10:56 -0000
Rugby HeavenPivot who changed codes in a league of his own for RatsBrisbane TimesRats had all the possession, and with Sheehan's service and Kennedy's tenacity creating havoc left and right, Gordon were made to look anything but a ...GORDON AND WARRINGAH PLAY OUT SHUTE SHIELD CLASSIC IN ROUND 14 2009Heavensgame Rugby Unionall 3 news articles »
'Rats win road game at Springfield - Palladium-Item
Fri, 03 Jul 2009 11:05:13 -0000
'Rats win road game at SpringfieldPalladium-ItemHe gave the 'Rats a 1-0 lead after a Tyler Bullock groundout. The Sliders responded with three runs in the bottom of the inning, without making a hit. ...Sliders slip up in fieldThe State Journal-Registerall 3 news articles »
PETA Wants Rights To Michael Jackson Song To Help Save Lab Rats - AHN
Fri, 03 Jul 2009 17:31:32 -0000
PETA Wants Rights To Michael Jackson Song To Help Save Lab RatsAHNThey would like to use the song to raise attention on the plight of rats used in laboratory experiments. Tracy Reiman, executive vice president of PETA, ...and more »
Whisker-twitching robot rat can work in the dark - TG Daily
Fri, 03 Jul 2009 21:47:11 -0000
Daily ContributorWhisker-twitching robot rat can work in the darkTG DailySheffield, UK - You have to ask whether they've really thought this through: using a giant robot rat to find disaster survivors. ...SCRATCHbot: The robotic rat that could save livesDaily Contributorall 2 news articles »
GE to phase out lab rats, use embryonic stem cells for testing instead - Catholic Culture
Thu, 02 Jul 2009 17:24:45 -0000
National PostGE to phase out lab rats, use embryonic stem cells for testing insteadCatholic CultureGeneral Electric has announced plans to phase out the use of laboratory rats in the testing of drug safety, and use embryonic stem cells in their place. ...GE Plans to Use Human Embryonic Stem Cells as Lab RatsDiscover MagazineGeneral Electric to Use Embryonic Stem Cells for Testing, Phase ...LifesiteGE Commits to Destructive Stem-Cell ResearchCitizenLinkall 127 news articles »

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