Sled dogs have been an integral part
of Denali National Park & Preserve in
Alaska for nearly 100 years. They
carry supplies, create trails, help
rangers patrol, and get people around
the park, which doesn’t allow
motorized vehicles. You can watch
Denali’s newest generation of huskies,
born in July 2016, whenever you want
on their 24/7 Puppycam. Source Source 2