* Dens: Red foxes often scent-mark their dens, particularly around the entrances, with urine and feces. This helps to establish the den as the fox's territory and to deter potential intruders.
* Trees and other vertical objects: Red foxes also frequently urine-mark trees and other vertical objects, such as fence posts, rocks, and buildings. This helps them to communicate their presence and territorial status to other foxes.
* Latrines: Red foxes sometimes create specific latrines, or communal dung heaps, in their territories. These latrines are often located in open areas, such as meadows or forest clearings, and they serve as a way for foxes to communicate their presence and status to each other.
* In the vicinity of food: Red foxes may also urinate around their food sources, such as kills, in order to mark their territory and claim the food as their own.
* When cornered: Red foxes will often urinate or defecate as a defensive mechanism when they feel threatened or cornered.