Cows of Valais
A friend invited me herding cows on an alp in Switzerland, where he was about to spend the season as a shepherd. What I discovered though, as soon as I made it all the way up into the valley, was - besides a cliché-ridden scenery of course - fighting cows! It is a hundred years old cult, he explained to me, carried out in that very hidden valley only. Already for as long as a whole century!
Back then, local farmers used the aggressive breed of the Eringer cow to establish a sport. Gathered in the valley at the start of summer, the farmers first carefully tag every single cow with a unique number, before handing them all over to some seasonal shepherds. For the following three month or so, these guys then take the herd up high into the mountains in the search for new grasslands.
Soon the cows naturally start fighting for the leading position of the herd. As they do so, it's the shepherds duty to document not just every fight, but also which animal gains the victory of it. The collected data get's send down from the mountains into the valley every night via smartphone, where the farmers await the daily news in the hope for their own cows to step up the ladder of hierarchy.