"On the ranges, where the stockmen and settlements are far apart, wolves go in bunches, from three to ten or even more, and when very hungry a bunch of them will attack a grown bull. They frighten him by snapping and playing around him till they get him on the run, when the bunch give full chase and stay close at his heels. While he is running in this way, one or more of them will grab him by the ham strings just above the hock joint. The bull makes, of course, a vigorous effort to free himself from the wolf, but before he can do so, the sharp teeth of the latter have cut or partially cut the ham string. They keep him on the run till they finally cut him down in both ham strings and then he cannot go further or fight the hungry wolves off.
"The whole bunch then eat his hams out while the bull is still alive, and after they get their full they let him rest. When they want to fill up again, they return and eat him till he dies, finishing the carcass as they require food.
"I have seen horses and cattle killed by wolves in this way live for several days with their hams eaten out, and have never seen the wolf make his attack or give chase in any other way. Being cowardly, he always follows behind and keeps out of all danger from the bull's hoofs."
Of cattle, calves and yearlings are generally selected, partly because the flesh of the younger animals is more to the wolf's liking and partly because they cannot defend themselves as readily as full grown animals, but full grown steers are also killed at times. Far more cattle are killed than are eaten. The wolf prefers fresh food always and in summer when their resources are unlimited they seldom return to the carcass for a second meal.
In "Bulletin 72," issued by the United States Department of Agriculture, the author, Mr. Vernon Bailey, has the following to say on the subject:
"The actual number of cattle killed by wolves can not be determined. Comparatively few animals are found by cattlemen and hunters, when freshly killed, with wolf tracks around them and with wolf marks on them. Not all of the adult cattle missing from a herd can surely be charged the depredations of wolves, while missing calves may have been taken by wolves, by mountain lions, or by 'rustlers.'"
Nevertheless there are data enough from which to draw fairly reliable conclusions. In the Green River Basin, Wyoming, on April 2, 1906, Mr. Charles Budd had 8 yearling calves and 4 colts killed in his pasture by wolves within six weeks. At Big Piney a number of cattle and a few horses had been killed around the settlement during the previous fall and winter. At Pinedale, members of the local stockmen's association counted 30 head of cattle killed in the valley around Cora and Pinedale in 1905, between April, when the cattle were turned out on the range, and June 30, when they were driven to the mountains. In 1906, wolves were said to have come into the pastures near Cora and Pinedale and begun killing cattle in January on the "feed grounds," and Mr. George Glover counted up 22 head of cattle killed by them up to April 10. Just north of Cora, Mr. Alexander, a well known ranchman, told me that the wolves killed near his place in June, 1904, a large three year old steer, a cow, 3 yearlings and a horse. On the G O S Ranch, in the Gila Forest Reserve in New Mexico, May 11 to 30, 1906, the cowboys on the round-up reported finding calves or yearlings killed by wolves almost daily, and Mr. Victor Culberson, president of the company, estimated the loss by wolves on the ranch at 10 per cent. of the cattle.
In a letter to the Biological Survey, under date of April 3, 1896, Mr. R. M. Allen, general manager of the Standard Cattle Company, with headquarters at Ames, Neb., and ranches in both Wyoming and Montana, states that in 1894 his company paid a $5.00 bounty at their Wyoming ranch on almost exactly 500 wolves. The total loss to Wyoming through the depredations of wolves Mr. Allen estimated at a million dollars a year.
In an address before the National Live Stock Association at Denver, Col., January 25, 1899, Mr. A. J. Bothwell said: "In central Wyoming my experience has been that these wolves kill from 10 to 20 per cent. of the annual increase of the herds."
Lieut. E. L. Munson, of Chouteau County, Mont., writing in Recreation, says: "It is said that in this country the loss from wolves and coyotes is about 15 per cent. * * * Wolves in this vicinity seldom kill sheep, as the latter are too carefully herded. They get a good many young colts, but prey especially on young cattle."