<p><br /> The moment a circus performance went horribly wrong for a Ukrainian lion tamer has been caught on video by an American tourist.<br /> </p><p><br /> The footage shows a lion lunging and striking, before being joned by another and then biting down on the trainer's left arm.<br /> </p><p><br /> Tamer Oleksie Pinko is knocked to the ground as he desperately tries to herd the big cats out of the ring.<br /> </p><p><br /> At one point, one of the lions almost leaps out of the net surrounding the ring and into the crowd.<br /> </p><p><br /> Mr Pinko was taken to hospital to undergo emergency surgery and is said to be in a stable condition.<br /> </p><p><br /> The footage was shot by US tourist Doug Sheperd, who was at the show in the Ukrainian city of Lviv with his wife and two children.<br /> </p>