Happily for England this formidable beast has long been extirpated from its woods; but the comparative extent of his domain has been thereby but little reduced. It may be roughly stated as comprehending the whole northern hemisphere, of which only very small portions are exempted from his ravages. He is easily tamed when young, and may even (according to M. F. Cuvier, who has published a history of a domesticated individual bordering in many particulars very closely on the marvellous, but of the truth of which the well known character of that scientific naturalist is a sufficient guarantee) be rendered susceptible of the highest degree of attachment to his master, whom he will remember after prolonged and repeated absence, and caress with all the familiar fondness of a dog. Such traits as this are, however, to say the least, very uncommon; and he is, even in captivity, generally speaking, ill tempered and morose. The old male, the father of the litter now in the Tower, was extremely savage; the female, on the contrary, is very tame, and, which is more remarkable, continued so even during the period of suckling her young, which were five in number. Neither before, at, nor after this period did her temper undergo any change: she suffered her keepers to handle her cubs, of which she was excessively fond, and even to remove them from the den, without evincing the smallest symptom either of anger or alarm. [Illustration] [Illustration] THE CLOUDED BLACK WOLF. _CANIS NUBILUS._ SAY. To distinguish between the numerous races of Wolves which are scattered more or less abundantly over nearly the entire surface of the earth; to determine that such and such variations are the result of original formation, and that such and such others are merely the product of accidental circumstances; in other words, to establish clear and tangible grounds of specific distinction between animals so varied in external appearance, but corresponding so perfectly in every essential particular, while the shades of character by which they differ, although in many cases strikingly marked, are for the most part so unimportant, or so little permanent, as scarcely to be deserving of notice,--is unquestionably one of the most difficult problems, to the solution of which the zoologist has to apply himself.