Kitsunetsuki is a Nogitsune's ability to specifically possess and control others to carry out the dark spirit's bidding. It literally translates to "possession by a Fox spirit." Another aspect of kitsunetsuki is to copy and assume the shape of its host (a form of [[shapeshifting]]). 

If a Fox Spirit is able to possess a human host, and take on their human shape, this means the Fox is over a 100 years old.

On Teen Wolf, "You can't be a Fox and a Wolf." Due to this, werewolves or Wolf-based creatures/spirits are immune to Kitsunetsuki.

The control of a Nogitsune spirit can be countered by the herb [[letharia vulpina]]. Poisoning by the herb will break the Nogitsune hold over said host temporarily. Nogitsune spirits can be completely exorcised from their host, or their host-copy shapes can be killed, by two known methods. One is changing the body of the host. Such as being changed by the [[Alphas+The Bite|the Bite of an Alpha werewolf]] because of said rule above. The other method is being slain by [[kitsune+super coordination|a weapon wielded by a Kitsune]].

On Teen Wolf, three people were victims of Kitsunetsuki: a Yakuza boss, the late [[Rhys|Corporal Rhys]] and [[Stiles Stilinski]].