The same den may be used for many generations, with burrows being added each year. Most dens have at least two openings. Red foxes are omnivorous. They eat a variety of animals and plant materials depending mainly on the availability of the food source. Seasonal variations are prominent in the diet of red foxes.
Red foxes show a strong preference for certain wild berries and fruits.
Establishment of fruit producing shrubs and trees should be encouraged. Diseases - Red foxes are particularly susceptible to rabies. Rabies may cause from 60 to 80 percent mortality in a population during an outbreak. Red fox predation on mice and woodchucks has been beneficial to most agricultural areas.