“Goats can be excellent pack animals. A good pack goat will carry at least twenty-five percent of his body weight (a two-hundred-pound wether will pack about fifty pounds), will follow you like a dog, will feed himself along the trail and around camp, and will be a pleasure to have around. Goats have been used as a beast of burden in Europe and Asia for thousands of years.”
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Picture found at American Goat.
Related: Pack camels / Pack horses.