Bear attacks man who climbed into zoo enclosure

This is the chilling moment a bear clamped a man in his jaws after he climbed into the enclosure at a Swiss zoo.

The mentally handicapped man was left seriously wounded - but astonishingly managed to escape with his life.

The 25-year-old climbed on to a wall surrounding the Bären Park (Bear Park) in the city of Bern, Switzerland, before falling 13ft into the enclosure, police said.