It's possible that the idea of a two-tailed fox comes from:
* Mythology and folklore: Some cultures have stories about mythical creatures with two tails, which may have influenced the idea of a two-tailed fox.
* Genetic mutations: Occasionally, animals are born with genetic mutations that can cause them to have extra limbs or other abnormalities. While it's possible for a fox to have a tail with a split or deformity, it's extremely rare and would not be considered a "two-tailed fox."
So, while the idea of a two-tailed fox is interesting, it's not based on reality.