Siberian Husky
Many owners soon learn that Siberian huskies need a strong leader if they stand a chance of controlling their intelligence. Many huskies have taught themselves how to dig under or jump over yard fences if they want to escape, and will often ignore all commands if they catch a scent that piques their interest.
Alaskan Malamute
This is yet another breed that has been bred for their strength and endurance as well as their ability to perform in sub-zero temperatures. Alaskan Malamutes love to pull sleds, go skijoring, and will accompany their family backpacking for hours. Thankfully, the breed does just as well as part of an active family.