British White Cattle Reacting to an Old Cow Hide

Took this video a few days back when I was moving this herd down a trap to a new pasture. They acted very strange about the cow hide, and it's been hanging there for months and months... I found it a little disconcerting!  The bull you see is J.West's El Presidente.  Sorry for the video quality, I took the video with my new phone and I've got to work out the best way to edit them for youtube upload.