Translation

The Japanese word for "Brown Rat" is dobu-nezumi 溝鼠.

Romaji do bu ne zu mi
Hiragana
Katakana
Kanji
Meaning Sewer Rat
School Level

Synonyms

Common Rat, Street Rat, Sewer Rat, Hanover Rat, Norway Rat, Norwegian Rat, Parisian Rat, Water Rat, Wharf Rat.[1]
Scientific name: Rattus norvegicus.

Further Reading

Wikipedia: Brown_rat (ドブネズミ)
  1. 七郎鼠 - kotobank.jp, accessed .