Red foxes are territorial, solitary animals that remain in the same home range for life keeping earthen dens abandoned by rabbits and marmots.
Red foxes are solitary animals and do not form packs like wolves. Ranges are occupied by an adult male and one or two adult females with their associated young.
The red fox is as least partially territorial and remains in the same home range for life. During some parts of the year adjacent ranges may overlap somewhat, but parts may be regularly defended.
Individual red fox adults have home ranges that vary in size depending on the quality of the habitat. In good areas, ranges may be between 5 and 12 square kilometers, but in poorer habitats, ranges are larger, between 20 and 50 square kilometers.
Individuals and family groups have main earthen dens and often other emergency burrows in the home range. Dens of other animals, such as rabbits or marmots, are often taken over by foxes. Larger dens may be dug and used during the winter and during birth and rearing of the young. The same den is often used over a number of generations. Pathways throughout the home range connect the main den with other resting sites, favored hunting grounds and food storage areas.