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A Kemono Friends character. She is one of many "Friends" in Japari Park, being part of the Snowy Mountain Region in the anime.
A "Silver Fox" simply refers to a melanistic (black colored) red fox with mostly black and gray fur along with a near complete lack of brown. This color morph is typical of American Red Foxes but it has spread through the fur trade. For the record, she was simply listed in the original game as an unspecified red fox (Vulpes vulpes) and in the anime as an American red fox (Vulpes vulpes fulvus).
Her outfit consists of what appears to be an marine blue blazer uniform with fur lined sleeves and a very short black pleated skirt worn over black leggings, black gloves as well as a scarf tied into a bow. She has long dark gray hair with black-tipped bangs along with the requisite fox ears and tail. She can be distinguished from a simple palette swap of Ezo Red Fox with her long sidelocks. Her eyes are also a deeper amber color than her fellow fox.
She is sometimes depicted wearing glasses while carrying a flask due to her depiction in the original game.
She is often seen with Ezo Red Fox, a fellow fox Friend. Compare as well with Red Fox, their nominate species Friend.