Hermione is a snow white ermine stoat.
It seems she is permanently in winter color.

Design by  PinkTriangle who tagged the file with the name Hermione, a of Germanic/Norse origin which 'translates' as 'army man' or warrior, though might well be a Norse form of Hermes, the Greek messenger of the gods.
I've tweaked her name slightly to the better known feminine form or Hermes of Hermione.