I haven't been to Pilatus yet but I've heard that it's a very long hike. What time did you start in the morning? It looks very early. When we went to Rigi a few years ago, the clouds caught us in the forest as well. I didn't really enjoy it as it was difficult to follow the trail. But then when we came up, it was so nice and sunny. This is why I love mountains in autumn and winter. It's almost always sunny up the hill. Great for grey cold days :)
I see that those cows liked you :) Did you go hiking on your own?
RE: The dragon above the clouds - Pilatus hike part 2 - Gfellen to Riseten