Rattus norvegicus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Rattus norvegicus
Species Authority: (Berkenhout, 1769)
Common Name(s):
English Brown Rat
Rattus caraco Pallas, 1779
Rattus caspius Oken, 1816
Rattus decimallus Pallas, 1779

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Ruedas, L.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Tsytsulina, K. (Global Mammal Assessment Team)
A common species with no major threats.

Geographic Range [top]

Range Description: This species was originally native to south-east Siberia, north-east China and parts of Japan, but it occurs worldwide as an introduced species.
China; Japan; Russian Federation
Albania; Armenia (Armenia); Austria; Azerbaijan; Belarus; Belgium; Bosnia and Herzegovina; Brunei Darussalam; Bulgaria; Cambodia; Cyprus; Czech Republic; Denmark; Egypt; Estonia; Finland; France; Georgia; Germany; Greece; Guernsey; Hungary; Iceland; Indonesia; Iran, Islamic Republic of; Ireland; Isle of Man; Israel; Italy; Jersey; Kazakhstan; Kyrgyzstan; Lao People's Democratic Republic; Latvia; Lebanon; Lithuania; Macedonia, the former Yugoslav Republic of; Malaysia; Malta; Mongolia; Montenegro; Myanmar; Netherlands; Norway; Papua New Guinea; Philippines; Poland; Portugal; Romania; San Marino; Singapore; Slovakia; Slovenia; Spain; Sweden; Switzerland; Syrian Arab Republic; Tajikistan; Thailand; Turkey; Ukraine; United Kingdom; Uzbekistan; Viet Nam
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Often abundant in suitable habitat (e.g. in urban areas).
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: This species is present in lowland and coastal regions wherever humans are. It is more common in colder climates (e.g. at higher northern and southern latitudes); in warmer and tropical regions it is restricted to habitats highly modified by humans (sewers, buildings, ports, etc.). It does not compete with R. rattus, as the latter is scansorial/arboreal whereas R. norvegicus is strictly terrestrial.
Systems: Terrestrial

Threats [top]

Major Threat(s): There are no major threats to this species.

Conservation Actions [top]

Conservation Actions: None in place and none required.

Citation: Ruedas, L. 2008. Rattus norvegicus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 01 April 2015.
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