Badgers, the little
b#@gers will tear through a wooden house. Fleecewife, the reason for a fox-proof run was because I was working six nights a week and couldn't get up there in the summer(the holding is six miles away) late enough to shut them away. As I said, this has been fine for about eighteen months, no problems at all.
I have a fancy it may have been a badger who made the hole but definitely fox in there as there are fox droppings.
Anyway, I shall be there in the future, given up work and everything, to shut them away, also I hope the presence of the dogs will make them think twice. The nights I've stayed up there they have gone mad in the night, giving the "Fox, fox" yell.