Little Bighorn River Bighorns have rattlesnakes because they also support a habitat for small mammals, like a mouse and chipmunk population, which are the prey of rattlesnakes. With the restoration of the black bear population in the Bighorn Mountains, there has been a resurgence of black bear living along the stream as it flows out of Montana, extending down the Little Bighorn Valley in Montana. Ranchers between the mouth of the canyon (at about the Wyoming Montana line) down to Wyola often report black bear groups living in the timber along the river, and travelers on the Montana portion of the Little Horn
Battle of the Little Bighorn from Fort Fetterman in the Wyoming Territory on May 29, marching toward the Powder River area. Brig. Gen. Alfred Terry's column, including twelve companies (A, B, C, D, E, F, G, H, I, K, L, and M) of the 7th Cavalry under Lt. Col. George Armstrong Custer's immediate command, Companies C and G of the 17th U.S. Infantry, and the Gatling gun detachment of the 20th Infantry departed westward from Fort Abraham Lincoln in the Dakota Territory on May 17. They were accompanied by teamsters and packers with 150 wagons and a large contingent of pack mules that reinforced Custer.