americanus), in the arctic fox (Canis lagopus), in the stoat and ermine, and among birds, in the ptarmigan, and some other species of Lagopus.
In cold regions the weasel turns white in winter, but less regularly and only at a lower temperature than the stoat or ermine, from which it is distinguished by its smaller size and the absence of the black tail-tip. The length of the head and.
The fox (Canis vulpes), the stonemarten (Mantes foina) and the stoat or ermine (Putorius erminea) range in summer above the tree-limit.
The animal is ` brown,' of a shade from orange or tawny to quite blackish; the tail and feet are ordinarily the darkest, the head lightest, often quite whitish; the ears usually have a whitish rim, while on the throat there is usually a large tawny-yellowish or orange-brown patch, from the chin to the fore legs, sometimes entire, sometimes broken into a number of smaller, irregular blotches, sometimes wanting, sometimes prolonged on the whole under surface, when the animal is bicolor like a stoat in summer.
To gamekeepers and those interested in the preservation of game, all animals such as the pole-cat, weasel, stoat, hawks, owls, &c., which destroy the eggs or young of preserved birds, are classed as "vermin," and the same term includes rats, mice, &c. It is also the collective name given to all those disgusting and objectionable insects that infest human beings, houses, &c., when allowed to be in a filthy and unsanitary condition, such as bugs, fleas, lice, &c.