Kate Stone, 30, was returning to her guest house in the Scottish town of Lochailort with friends Monday night when a rogue stag appeared in the dark, butted her violently and disappeared, the British newspaper The Mirror reported Tuesday.
She was taken to a Fort William hospital 15 miles away, then airlifted to a Glasgow hospital with a puncture to her neck and spinal column and severe blood loss, the newspaper said, adding she remains in critical condition.
A colleague who was present at the incident, Gary Burton, said, "There are plenty of deer around here but you never hear of a stag attacking anyone. The force of the attack must have been ferocious. I went to the scene [later] and found Kate's mobile phone smashed into tiny bits."
A local gamekeeper, Peter Fraser, said the attack was unusual.
"For a stag to come out of the darkness like this and go for someone is highly unusual, a chance in a million. It is very, very strange behavior for a stag in the wild," he said.