Beast of burden, or whether or not soumař is from German originating label for the carrier that's transporting the cargo with the help of animals. Among the most commonly used animals include horses, donkeys, hinnies, mules and camels. Words beast of burden and soumař comes from the German Säumer, in austrian German Samer. In the original the word Säumer indicates a man who led, rented or owned animals carrying cargo. The animal is referred to Saumtier. In English is used a general term Packhorse, whether it's about horses, donkeys, mules, mules or other animals. The american army used these animals inter alia, for the transport of dismantled works in geographically unfavorable areas. These units sometimes have in the title just use the word Pack. In this case, doesn't mean the package or the box, but just a pack mule..