Kitsune

A kitsune is a monster that, in appearance, looks somewhat similar to werewolves. Kitsune's seem to be very rare and uncommon. They feed the pituitary gland, a part of the brain, without it, they will die.

In 1998, Dean and John hunted one while leaving Sam alone where he encountered the daughter of the kitsune they were hunting.

Appearance
Kistunes looks like a regular human being but have the ability to partially shapeshift themselves into animal-like qualities. A kitsune's primary weapon is their claws; they can extend claws from their finger tips upon demand. And, if they are feeding or attacking, their eyeballs turn yellow and fox-like while the pupils narrow. All in all they take on a very similar appearance a werewolf does.

Abilities

 * Super strength - Kitsunes appear to be stronger than humans. They can knock down and overpower humans with little difficulty.
 * Super speed - Kitsunes possess supernatural speed that is described as fox-like. Along with their speed, they use their strength to catch their prey or enemies off guard and kill them expediently.
 * Claws - All Kitsunes have long talon-like claws that they use to tear at their victims.
 * Invulnerability - The can only die if they're stabbed in the heart, or starvation.

Weakness

 * Heart destruction - A kitsune can only be killed by being stabbed in the heart with a knife or dagger.
 * Starvation - Without a regular supply of human brains they will die.

Appearances

 * Season 7
 * The Girl Next Door