穴あな持もたず

noun

bear that hasn't entered hibernation

Refers to a bear that remains active during winter instead of hibernating, often because it couldn't store enough fat. Used in wildlife contexts.

• 今年ことしはドングリが不ふ作さくで、穴あな持もたずのクマが増ふえている。

  This year the acorn crop was poor, so there are more bears that haven't entered hibernation.