Leaving a bit of wild space at the bottom of my garden a few years back seemed like a small and easy thing to do to promote backyard biodiversity. A small pond was added in the hope of seeing some vertebrates (other than the rodents I wasn't so convinced by - sorry). Of course we were delighted with the insects and birds but this autumn saw the arrival of a pair of foxes that have shifted at least a tonne of soil to build their earth. I am currently adopting a laissez faire attitude - is this wrong? If they mate we might have pups and protective parents in the spring - as a protective parent myself should I worry? Will they take over the whole garden? Should I try to get rid of them or assume innocence until proven guilty?