siberian weasel mustela sibirica or kolonok is a medium-sized weasel native to asia. weasel builds its nest inside fallen logs.

adult animal asia autumn background branch brown brushwood burrows closeup coffee cute elongated europe european fallen female forest fur golden hunting kolonok males mask medium mustela mustelidae natural nature nest outdoor peach posing predator red roots siberian sibirica small stoat stretched stumps tree weasel wild wildlife wood woody young zoo