Iran’s nomads have been making the same migration for millennia. In spring they headed for the cooler pastures of the Zagros, where grass for their flocks of sheep and goats was abundant.

A locally produced sheep is sold for QR 1,400, while the Iranian Saraji sheep costs QR1,150, the Kermani (Doha-bred) sheep is priced at QR1,200, the Somali sheep at QR 650, and the Yemeni Rafidi ...