Kitsune

The kitsune is a fox youkai in Japanese mythology. Stories depict them as mischievious, intelligent, and possessing paranormal abilities, increasing with their age.

Like other foxes such as the Huli jing and the kumiho, the kitsune can shapeshift into a human form.

Information
Unlike her distant Chinese cousin, the huli jing, this kitsune prefers masculine clothing, as she says "it's more comfy".

She is said to be the leader of an entire fox "civilization". Nobody, except her and her cousins can confirm this.

Now for some more species information. The kitsune is known to have as many as nine tails, one grows every 100 years. When a kitsune grows it's 9th tail at 1000 years old, it's fur/hair become white and it can ascend to the heavens.

The kitsune is said to be a messenger of a fox god.

Backstory
One of the oldest known surviving literature involving the kitsune, is from the 11th century. The kitsune was born as an adaptation of the huli jing from Chinese mythology.

Kuda-gitsune
The kuda-gitsune, or kanko, is a fox, but it's the size of a rat or weasel and can fit into a bamboo pipe. They can also multiply until there are around 70 of them.

They're considered a type of pest/parasite by many.

Considerably, they're a type of Kitsune-tsuki (fox possession). but they do not possess a single individual, but a whole family. It is said that the kuda-gitsune, following the master's will, would obtain goods from other families, so a family that keeps and raises a kuda-gitsune slowly grows wealthy. Alternatively, the family does fastly grow wealthy at first, but the kuda-gitsune multiplies until there are around 70, and then they slowly eat away the family's wealth, turning the family poor.