Ermine

The ermine, a relative of the smaller least weasel, Mustela nivalis, grows up to 13.5 inches (34 cm) in length including 4 inches(10 cm) of long haired tail.

The ermine’s size varies over its geographical range. The males are larger than the females, weighing 2-45 g, whole females weigh only 140-285 g.

The ermine is primarily found in Canada, Alaska, the northern states, and parts of the west. Common in its range, it survives well in open coniferous and mixed woodlands, marshes, tundra, brush, open ground and agricultural fields.

Also good climbers and swimmers, ermines are active both day and night. An ermine molts twice a year, in spring and fall. The change from brown to white in the fall is rapid because the new white coat grows beneath the old one. The old coat may be shed in only three days in very cold conditions.
Ermine