Brown rat

Rattus norvegicus •

LEAST CONCERN

Larger and stockier than black rat; excellent swimmer; common lab and pet ancestor; highly adaptable.

Body Length

15–28 cm

Tail Length

10.5–24 cm

Weight

140–500 g

Origin: Northern China, Siberia, Japan

Distribution: Worldwide except Antarctica

Region: East Asia

Urban

rural

sewers

fields

near water

least concern

Lifespan: [object Object] years

Invasive: No

Pest: No

Lab Animal: Yes

Pet: Yes