In captivity, wolves are the meanest brutes on earth, and in a wild state they are no better. As a rule, the stronger ones are ever ready to kill the weaker ones, and eat them, too. One night, our male Russian wolf killed his mate, and ate nearly half of her before morning. A fox or a wolf cub which thrusts one of its legs between the partition bars and into a wolf's den almost invariably gets it bitten off as close to the body as the biter can go. In the arctic regions, north of the Great Slave Lake, "Buffalo" Jones and George Rea fought wolves incessantly for several days, and every wolf they wounded was immediately killed and devoured by its pack mates. In captivity, a large proportion of mammals fight, more or less; and the closer the confinement, the greater their nervousness and irritability, and the more fighting. Monkeys fight freely and frequently. Serpents, lizards, and alligators rarely do, although large alligators are prone to bite off the tails or legs of their small companions, or even to devour them whole. Storks, trumpeter swans, darters, jays, and some herons are so quarrelsome and dangerous that they must be kept well separated from other species, to prevent mutilation and murder. In 1900, when a pair of trumpeter swans were put upon a lake in Prospect Park, Brooklyn, with three brown pelicans for associates, they promptly assailed the pelicans, dug holes in their backs, and killed all three. The common red squirrel is a persistent fighter of the gray species, and, although inferior in size, nearly always wins. A Fight Between a Whale and a Swordfish. One of the strangest wild animal combats on record was thus described in the Proceedings of the Zoological Society of London, for 1909.