If the moon is full, however, they may feed all night long, and then wander but little in the daytime.
Aside from man, the full-grown grisly has hardly any foe to fear.
Nevertheless, in the early spring, when weakened by the hunger that succeeds the winter sleep, it behooves even the grisly, if he dwells in the mountain fastnesses of the far northwest, to beware of a famished troop of great timber wolves.

These northern Rocky Mountain wolves are most formidable beasts, and when many of them band together in times of famine they do not hesitate to pounce on the black bear and cougar; and even a full-grown grisly is not safe from their attacks, unless he can back up against some rock which will prevent them from assailing him from behind.

A small ranchman whom I knew well, who lived near Flathead Lake, once in April found where a troop of these wolves had killed a good-sized yearling grisly.

Either cougar or wolf will make a prey of a grisly which is but a few months old; while any fox, lynx, wolverine, or fisher will seize the very young cubs.

The old story about wolves fearing to feast on game killed by a grisly is all nonsense.