MADRID, SPAIN - OCTOBER 21: A flock of sheep guided by shepherds during the march carried out by the sheep through the center of Madrid. Shepherds guided sheep through the Madrid streets during the festival of Transhumance, which is "an ancestral way of taking advantage of natural resources favoring the animal welfare of livestock cabins and looking for the regions with the best pastures in each season". Madrid October 21, 2018 in Madrid, Spain. (Photo by Patricio Realpe/ChakanaNews)