The character is from the third image here, which names her "シロイキタキツネ", or "Unidentified Mysterious Animal". If you know what she's supposed to be please tag her.
Judging from what the third picture says, she's a white morph of Ezo Red Fox. Would Ezo Red Fox be enough, or should we create a new tag seeing as apparently White Ezo Red Fox has never been tagged/seen before?