Horrific animal cruelty footage shows a tour operator sending a helpless donkey over a cliff on a terrifying zipline ride.

The brutal stunt was in the Dagestan region of southern Russia, aimed at attracting tourists.

The tour operator named Ramazan posted the sickening footage captioned: 'The donkey flew faster than an eagle!'

He then quickly deleted it as he was flooded with hostile comments.

In 24 hours, the video received 5,000 furious posts.