"Over the centuries, horses, mules, donkeys and many other species have served man. They are the foundation on which entire civilizations were built. Literature often refers to them as beasts of burden."
"What is a beast of burden? ...a working animal used by people to transporting materials by loading items in a pack on the animal's back..."
"Donkeys are able to be fed and stabled with horses. Their small size makes them easy to load and their surefootedness makes them a good option for pack animals."
"Donkeys are able to be fed and stabled with horses. Their small size makes them easy to load and their surefootedness makes them a good option for pack animals."
"Camels excel in desert regions as a pack animal due to its ability to carry larger loads up to 400-500 pounds and their excellent adaptation to desert life."