The vet was here doing BSE on the long yearlings we had one when he checked Scrotal he said ut oh which is never something you want to hear the vet say. Then said oh it's ok he just has mastitis which of course I have seen in cows just had no idea a bull could get it. He lanced it drained it and the bull passed his BSE with no other issues. As soon as you think you have this thing sorta figured out they throw you a curve.