noun
chipmunk; Siberian chipmunk
Refers to chipmunks, especially the Siberian chipmunk (Tamias sibiricus) native to Japan.
公園でシマリスを見つけた。
I found a chipmunk in the park.
シマリスは頬袋にどんぐりを詰め込む。
Chipmunks stuff acorns into their cheek pouches.
リス is the general term for squirrels, while シマリス specifically refers to chipmunks, which are a type of ground squirrel with stripes.
Compound of 縞 (shima, 'stripe') and 栗鼠 (risu, 'squirrel'), referring to the striped pattern of chipmunks. The katakana spelling シマリス is standard for animal names.