The Wild Burro was first introduced by Spaniards in the 1500's. They can reach a height of 5 feet, have a short mane and long ears. They are prized for survivability in desert conditions and ability to carry heavy burdens for long periods of time. They feed on a variety of plants and grasses, but also require having drinking water nearby. Early prospectors relied on burros as they trekked through long stretches of desert in search of gold and silver.