Yes, he's (she's?) there.
You just have to look carefully. What you're looking at is the least weasel, of which is written:
Occupying most of Canada with the exception of the Maritimes, southern Ontario, and Quebec, this fierce little carnivore is scarcely larger than the mice on which it preys. Its total body length seldom exceeds 20 cm.
Incredibly quick and agile, these tiny predators are seldom trapped except by accident. The coat, which is brown above with a white underside, turns completely white in winter throughout most of its North American range.
Living almost exclusively on mice, shrews, and lemmings, they also use the fur of these animals to line their underground nests. The Inuit in particular look upon this small hunter with great respect, and the capture of one is considered a good omen.
Well, not for the weasel, of course.