I have spent many a day up in the hill's, i do remember one day last year i set off from the North Face car park under Ben Nevis around 3am for a long slog up the Carn Mor Dearg Arete. As i hit the ridge the sun was just peaking up over the Grey Corries, there was fresh snowfall overnight and no wind at all which was welcome. I looked down at my feet and saw some large prints in the snow, larger than a fox or wild cat. The prints actualy followed the ridge line, anyway as i looked infront of me i noticed in the distance a large Brown/Black cat running down the slopes, It was larger than a fox and so were the prints i found. It was also only just getting light, It was without doubt some sort of big cat.