Actually I tried to look it it up in some pediatric journals - some 5 cases over 40 years - one tail case every 8 years .........
The hypertrichosis is more common now, due to the higher number of births worldwide,
compared to the middleages - it is probably about one hypertrichosis every 6 years now ....
Still the chance of a case of hypertrichosis with tail is soooooooooooo unlikely -
actually, I would pay to see one too ........ !!!!!!!!!!!!