Most foxes kept as pets are "tame" rather than truly "domesticated". Tame foxes are wild-born or captive-bred animals that have been socialized to tolerate humans, but they retain their wild instincts, such as intense digging and marking territory with pungent urine.
The only truly domesticated foxes are the result of a decades-long experiment in Novosibirsk, Russia, initiated by Dmitri Belyaev in 1959. These foxes were selectively bred for "tamability," eventually developing dog-like traits such as wagging tails, floppy ears, and a genuine seeking of human affection. Legal and Practical Realities can you buy a domesticated fox
Buying a fox is heavily restricted and requires navigating a patchwork of state and local laws. Most foxes kept as pets are "tame" rather