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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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Nine rats and counting!! Its gonna be like Kill bill!
Foxx_Volpe (Foxx_Volpe) Tue, 15 Dec 2009 03:50:57 -0000
Nine rats and counting!! Its gonna be like Kill bill!
My skin is crawling just from being in this rats nest.
thoughtsbyBAM (Ben Malonee) Tue, 15 Dec 2009 03:50:50 -0000
My skin is crawling just from being in this rats nest.
I want to see some goats eating through walls!! And flattened dead rats! #hoarders
ms_may728 (Marsha T) Tue, 15 Dec 2009 03:49:02 -0000
I want to see some goats eating through walls!! And flattened dead rats! #hoarders
Ratatouille. The movie is so fun but so disgusting. I don't want rats to cook for me. :S
nrmers (Naja Raemi) Tue, 15 Dec 2009 03:46:23 -0000
Ratatouille. The movie is so fun but so disgusting. I don't want rats to cook for me. :S
Government Run Health Care: Now I don't give a rats http://www.insurance-forums.net/forum/government-run-health-care-thread16901.html
insuranceforums (Insurance Forum) Tue, 15 Dec 2009 03:45:15 -0000
Government Run Health Care: Now I don't give a rats http://www.insurance-forums.net/forum/government-run-health-care-thread16901.html
Red Hot Rats Hit The Road This Weekend - OurSports Central (press release): Red Hot Rats Hit The Road This Week.. http://bit.ly/5noGLC
HartfordCTNews (Hartford Connecticut) Tue, 15 Dec 2009 03:43:30 -0000
Red Hot Rats Hit The Road This Weekend - OurSports Central (press release): Red Hot Rats Hit The Road This Week.. http://bit.ly/5noGLC

 
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