More importantly, it's the most able if you spend lots of time at higher speeds or need to haul heavy loads frequently. (carbuyer.co.uk)
These dogs are mostly bred for pulling strength, so they make the ideal dogs for hauling heavy loads over long distances. (notinthedoghouse.com)
In the mid 1800's, Russian traders traveling along the Yukon River acquired several sled dogs from interior villages because they found them to be superior in hauling heavy loads compared to their native sled dogs. (notinthedoghouse.com)