No, it isn't some new bovine disease that causes diarrhea! Get your mind out of the gutter! This is an attempt by Spanish feminists (who knew?) to gender equalize the great bull runs of Spain. However, don't these women understand what happens to the beasts at the end of the run? They get slaughtered for dinner! So, it isn't enough that a bunch of macho men get munched during the event and the bulls die a valiant death? These women want to kill a bunch of heifers (I'm referring to the cows) too? Although the image of a bunch of hefty women trying to scramble out of the way of impending hooves is amusing! I don't habla Espanol that well after 4 years of high school Spanish, but maybe you can decipher: http://www.estudiln.net/.
I think they should have a grate (pun intended) dairy product competition and see who can churn the most butter! Or have the biggest/wettest teats contest! Come and get 'em boys! Our milkshake brings all the boys to the yard!