Teddy Roosevelt talks about bears

[brotherbear]

American Bears - Selections from the Writings of Theodore Roosevelt.
A Cattle-Killing Bear.
Sometimes, however, a bear will take to killing fresh meat for itself. Indeed, I think it is only its clumsiness that prevents it from becoming an habitual flesh-eater. Deer are so agile that bears rarely get them; yet on occasions not only deer, but moose, buffalo, and elk fall victims to them. Wild game, however, are so shy, so agile, and so alert that it is only rarely they afford meals to Old Ephraim - as the mountain hunters call the grizzly. 
Domestic animals are slower, more timid, more clumsy, and with far duller senses. It is on these that the bear by preference preys when he needs fresh meat. I have never, myself, known one to kill horses; but I have been informed that the feat is sometimes performed, usually in spring; and the ranchman who told me insisted that when the bear made his rush he went with such astonishing speed that the horse was usually overtaken before it got well under way. 
The favorite food of a bear, however, if he really wants fresh meat, is a hog or sheep - by preference the former. If a bear once gets into the habit of visiting a sheepfold or pigpen, it requires no slight skill and watchfulness to keep him out. As for swine, they dread bears more than anything else. A drove of half-wild swine will make head against a wolf or panther; but the bear scatters them in a panic. This feat is entirely justifiable, for a bear has a peculiar knack in knocking down a hog, and then literally eating him alive, in spite of his fearful squealing. Reply