Bridge draws dogs to jump to death

Donna Cooper still has no idea why her normally obedient border collie, Ben, leaped to his death this spring off a tall rural bridge in Milton without any warning or apparent rationale. "Ben's feet never touched the wall," she said, referring to the waist-high, 18-inch-thick barrier that has been hurdled - inexplicably and with a near certainty of death - by scores of dogs during the past three decades. "He just went straight over."