Apparently last year there were over 5,000 hospital admissions for dog bites, with young children suffering disproportionately. Organisations such as the RSPCA and Dogs Trust are alarmed by the year on year increase in injuries caused by dogs. Of course, it's very sad what has happened to this young baby but most of us are far more at risk from our canine best friend than from an urban fox.
Personally, I value the urban foxes that visit my garden. I do agree with previous posters that the responsible disposal of waste would eliminate many unwanted pests.