Daisetsuzan is home to mammals such as brown bears, ezo deer, ezo stoat, and Hokkaido squirrels. It’s also home to Blakston’s fish owls and kumagera black woodpeckers, which are designated as protected species. “Ice Age” species still inhabit Daisetsuzan too. These include the ezo nakiusagi whose habitat is limited to the cold rocky areas of Hokkaido, the usubaki butterfly, a relict species found only in Daisetsuzan, and the asahi fritillary butterfly.