Calf roping is a sport where a person chases a calf on horseback. The person ropes the calf, then jumps off their horse and ties the calf's one front foot and two hind feet with a "piggin' rope". Then they must give the calf some slack and the rope must stay tied for 6 seconds.
Calf roping started with cowboys. They had to rope and tie down calves to brand them and doctor them.
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Calf roping Facts for Kids. Kiddle Encyclopedia.