Stampede

A stampede () is a situation in which a group of large animals suddenly start running in the same direction, especially because they are excited or frightened. Although the term is most often applied to animals, there are cases of humans stampeding from danger too.

Cattle stampedes

The animal behavior of stampeding was observed by cattle ranchers and cowboys in the American Wild West. Large herds of cattle would be managed across wide-open plains, with no fences to contain them. In these unbounded spaces, cattle were able to run freely, and sometimes the whole herd would take off in the same direction unexpectedly. Cowboys developed techniques to deal with this situation and calm the cattle, to stop the stampede and regain control of their herd. The term "stampede" came from the Mexican Spanish term estampida ('an uproar').

Cattle herds tended to be nervous, and any unusual occurrence, particularly a sudden or unexpected noise, could scare the cattle and kick off a stampede. Things such as a gunshot, a lightning strike, a clap of thunder, someone jumping off a horse, a horse shaking itself, or even a tumbleweed being blown into the herd have been known to cause stampedes.

One method used for stopping a stampede is to turn the moving herd into itself so that it runs in wide circles, rather than running off a cliff or into a river. The circle can be made smaller and smaller, eventually forcing the herd to slow down due to lack of space in which to run. Tactics used to make the herd turn into itself include firing a pistol, which creates noise to make the leaders of the stampede turn.