Video: 'Black leopard' caught on film in Stroud Big cat expert Frank Tunbridge, 65, from Gloucestershire, who has been hunting predators for years, said: "I think this footage is pretty much conclusive. The footage was captured by Coryn Memory, near her house in Thrupp, Glos., in July 2009. Balancing the handheld camera on a pile of CDs, she managed to film ten minutes of daylight footage from an upstairs window - as the beast stalked across the grass. It was captured running and walking, before slinking off into the undergrowth near a dark wood, near the county's Rodborough Common. Ms Memory, who works as a teaching assistant in a special school, said: "I was fascinated just watching it walking around the field I was not frightened at all - just excited to see it and finally get it on camera. It was only about 300 yards away. I believe he was looking for voles and mice in the short grass after it had been cut. At one stage a fox was in the same shot so you could compare the difference in size.