Gray fox dens may be in use any time of year, but the majority of use comes during the whelping season, or the time of year when birthing occurs. Dens are usually located in wooded or brushy habitats, and are generally less obvious than that of a red fox. They do not excavate their own [...]

https://www.youtube.com/watch?v=Wf9Qkgwe3Rw The core of red fox social structure is the family unit, as this species is monogamous and actively defends their territories from other red fox. Territorial disputes are seldom marked by violent encounters and usually consist of antagonistic displays, chasing, and harassment. Territories are maintained year round. Red fox are highly mobile and can [...]