noun
Japanese squirrel
Refers specifically to Sciurus lis, a squirrel species native to Japan.
ニホンリスは本州と四国に生息している。
The Japanese squirrel inhabits Honshu and Shikoku.
公園でニホンリスを見つけた。
I spotted a Japanese squirrel in the park.
Compound of 日本 (Nihon, 'Japan') and 栗鼠 (risu, 'squirrel'). The kanji 栗鼠 is ateji; the word is usually written in katakana as ニホンリス.