I thought the smell of our male dogs lifting their leg round the field would put off a fox, but they seem to pee in the same place to cover the dog smell!! There again, they sit outside the dog pens at night, and when they dogs come into the field for a run, the foxes move off into the hedge - can be three or four all together. So even the presence of a dog is no deterrent to a wily old fox.
Poor Gordon - he will be kept busy