Where has the brown rat been recorded?

Rattus norvegicus occurrence evidence comes from 73,591 records in 102 countries and territories, from 1860 to 2026. Most records come from Belgium.

• 73,591 records
• 102 places
• 142 years recorded
• Mammalia class

Observation evidence passport

Compare this animal’s observation pattern

When it is recorded

Peak month: March. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.

Records over time

Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.

Where brown rat has been recorded

The countries below show where occurrence evidence exists for brown rat. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.

Showing the top 40 of 102 places.

Related animals

Others in the family Muridae.

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Typical Lemniscomys

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Gracile Tateril

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