first time i heard that... and here i thought their tails were just age demarcations like growing pubic hair for humans... do humans get weaker because they loose their pubic hair/beard?
a fox gains more tails as he gets stronger so you can guess at its strength level by the number of tails is what i thought till now
and here it gets introduced he gets stronger because he grows more tails... so then why does he grow more tails?