Noun
common domestic rat; serious pest worldwide
Source: WordNetAs pets main The brown rat is kept as a pet in many parts of the world. Source: Internet
Diet The brown rat is a true omnivore and will consume almost anything, but cereals form a substantial part of its diet. Source: Internet
Description Comparison of the physique of a black rat (Rattus rattus) with a brown rat (Rattus norvegicus) The fur is coarse and usually brown or dark grey, while the underparts are lighter grey or brown. Source: Internet
Species and description A river rat A rat in a city street The best-known rat species are the black rat (Rattus rattus) and the brown rat (Rattus norvegicus). Source: Internet
SNH (2008) p. 10 The geographical isolation and recent glacial history of Shetland have resulted in a depleted mammalian fauna and the brown rat and house mouse are two of only three species of rodent present on the islands. Source: Internet
The mammals dog ( Canis familiaris ), brown rat ( Rattus norvegicus ), mouse ( Mus musculus ), and chimpanzee ( Pan troglodytes ) are all important model animals in medical research. Source: Internet