Stampede

A wild, headlong scamper, or running away, of a number of animals; usually caused by fright; hence, any sudden flight or dispersion, as of a crowd or an army in consequence of a panic.

To run away in a panic; -- said droves of cattle, horses, etc., also of armies.

To disperse by causing sudden fright, as a herd or drove of animals.

a wild headlong rush of frightened animals (horses or cattle)