A good friend and neighbour was recently trailing a herd across a highway when a semi truck unit ran into the herd killing 4 cows and 7 calves. The rancher said that the trucker saw the cattle and blew the air horn 500 yards before hitting the herd. There was no braking until the first animal was hit! Does anyone know of precidence setting cases here in canada for liability in similar incidences. My friend was very lucky to live through this as a flying cow missed him by about a foot.