In contrast to the Alaskan Malamute which was bread for pulling heavier sleds over shorter distances, this breed is a medium sized, rather lightweight animal. (wileypup.com)
Yeah you might be able to handle 500 + lbs on a deadlift fresh, but what about after a 1 mile run, some 400's, or a barrage of 40 yard sprints, heavy sled pushes, or after you've cranked out a few rounds of bodyweight movements? (onnit.com)
Siberian huskies are built to pull heavy sleds over long distances in extreme climates. (dogcare.dailypuppy.com)