Arctic dog's burden refers to the weight and responsibility that falls on the shoulders of a sled dog as they navigate the harsh terrain of the frozen tundra. Synonyms for this phrase may include "sled dog's obligation," "heavy pack animal's burden," or "the Arctic canine's charge." These terms all highlight the demanding role that these animals play in supporting humans in extreme environments. They are expected to pull heavy loads across treacherous terrain, often enduring brutal weather conditions as they do so. Despite this challenging work, sled dogs are revered for their loyalty and endurance, making them essential companions for those who rely on them for survival in the Arctic regions of the world.