Young boy blowing up the bottom of a cow to increase the milk production, Mundari tribe, South Sudan, Africa

Young boy blowing up the bottom of a cow to increase the milk production, Mundari tribe, South Sudan, Africa

Young boy blowing up the bottom of a cow to increase the milk production, Mundari tribe, South Sudan, Africa

Young boy blowing up the bottom of a cow to increase the milk production, Mundari tribe, South Sudan, Africa

Young girl posing with cows, Mundari tribe, South Sudan, Africa

Young boy drinking milk directly from a cow, Mundari tribe, South Sudan, Africa

Young boy collecting cow dung, Mundari tribe, South Sudan, Africa

Young boy from the Mundari tribe milking a cow, South Sudan, Africa

Young boys with Kalashnikov posing with cows, Mundari tribe, South Sudan, Africa

Young boy drinking milk directly from a cow, Mundari tribe, South Sudan, Africa

Young boy collecting cow dung, Mundari tribe, South Sudan, Africa

Young cows in meadow in The Cotswolds at Swinbrook, Oxfordshire, UK

Herd of cattle walking on road

Farmers guiding herd of cattle

Young woman driving herd of Guernsey cows along a rural road, Oxfordshire, England

Young woman driving herd of Guernsey cows along a rural road, Oxfordshire, England

Man carrying young boy on his back walking on a pasture with English Longhorn cows, Oxfordshire, England

Children herding livestock across highland plateau above Urubamba River (Sacred Valley of the Inca) near the village of Maras, Highlands, Peru