Compare two animals

Brown rat

Length

0.15 to 0.27 m (head and body; the tail is shorter than the body)

Weight

0.14 to 0.5 kg (adults (140 to 500 g))

Lifespan in the wild

up to 4 years (maximum, in captivity; wild rats are thought to live upwards of 2 years)

Lives in

China, Japan, Mongolia and Russia