Brown rat | Description, Origin, Pest, Diseases ... - Britannica
https://www.britannica.com:443/animal/brown-rat
WEBApr 4, 2024 · Brown rat, (Rattus norvegicus), species of rat (family Muridae) found on every continent except Antarctica. The alternate name “Norway rat” came from a false hypothesis widely believed in 18th-century England that the rats were native to Norway. Research has confirmed, however, that the brown rat.
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