Contact with humans
	The densities of foxes and of people are greater in urban 
than in rural environments.  With such a concentrated human 
population, interactions between humans and foxes are inevitable 
in an urban area.
	Foxes avoid people whenever they can.  They certainly use 
human structures for their dens, and human refuse for their food, 
but they prefer to stay away from the humans themselves.  Their 
frequent movement to different den sites may help them avoid 
human notice, and their mostly nocturnal life minimizes 
encounters with humans.
	Humans vary greatly in their attitude towards foxes.  Some 
consider them pests or trap them for their fur, but others enjoy 
their presence and will even set out food for them.  One source 
of problems between humans and foxes is fox predation on domestic 
pets.  In his study of food preference in suburban foxes, Harris 
(1981b) questioned 5,191 households in Bristol to find out how 
many had lost pets to foxes.  Only 2.7% of households who owned 
cats had lost a cat to foxes, and most of the cats lost were 
kittens.  Of families who kept pets other than cats or dogs in an 
outdoor garden accessible to foxes, 8.0% had lost a pet to foxes 
within the past year, and 51.1% had lost a pet more than a year 
prior to the survey.  However, many people in Bristol provided 
food for foxes, sometimes regularly, and sometimes when they saw 
a fox on or near their property.