According to, "The Mammals", by Desmond Morris, then curator of mammals at the London zoo, wolves (Canis lupus) average about 100 pounds, and in winter several packs may join, although they rarely exceed 30 animals. I do believe that occasional, exceptional wolves may reach 200 pounds, certainly 175 pounds.

He says that a pack may travel over 40 miles a day, expanding their range when prey is scarce.

I believe that larger packs may exist in places like Russia, but will not venture to say how large they may become. But when state news agencies proclaim that the packs are large and that they menace whole villages, I don't dismiss that casually.

The prospect of feral hyenas in the USA is a grim thing to contemplate. I hope that problem doesn't spread, if true.