Mules. Emperor Vespasian (AD 69 to 79) was nicknamed “Mulio” (Muleteer). A full Roman legion was thought to use 1,080 Mules in its baggage train.

They are generally larger than donkeys (despite having a donkey father), and often considerably so. Their body weight makes them better pack animals. It is more powerful than a donkey, more stamina than a horse, and has a gentler temperament than both Donkeys and Horses.