burro
A small, strong donkey used to carry heavy loads.
A burro is a small donkey, especially the kind used as a pack animal in Mexico and the American Southwest. These sturdy, sure-footed animals have carried supplies through desert canyons and up mountain trails for hundreds of years.
Burros are smaller than horses but incredibly strong for their size, able to carry heavy loads over rocky terrain where trucks can't go. Miners in the Old West relied on burros to haul equipment and ore. The animals' remarkable endurance made them perfect for harsh desert conditions: they can survive on sparse vegetation and go longer without water than horses.
In English, we use burro specifically for these working donkeys of the Southwest, while donkey is the more general term. Today, wild burros still roam parts of the western United States, descendants of animals that escaped or were released by prospectors and settlers long ago.
Burros are known for their stubbornness: once a burro decides not to move, it can be nearly impossible to make it budge. But this trait actually reflects intelligence and caution rather than simple obstinacy. These animals won't walk where they sense danger, which kept many miners safe on treacherous mountain paths.