A jogger who was head-butted and trampled on by a herd of cows has been rushed to hospital with serious injuries.
The frightening incident happened on the Meadowlark Trail in Colorado, US, while out running over the weekend, according to a Boulder Park Country Parks & Open Space spokesperson.
Vivian Kuenn, who was biking down the hill when the jogger was running along the trail, said she saw a herd of cows surround the woman before she started screaming.
