My last malamute/husky mix when she got off leash would easily get a mile ahead of us in when were in snow shoes or on x/country's, she summited Mt. Shasta twice in three feet fresh pow while we were still at least a mile down the trail.

As is Louie Anderson, Josh Hartnett and Vincent Karthheiser.

Way less processed foods especially with sugar and flower then, meat was fresh from the butcher or butcher deparment at the A&P style grocery stores of the time, according to the census in 1940 18% more Americans grew their own vegetables and raised their own chickens etc...number went up considerably in early 40's when rationing started and millions grew their own WW2 Victory Gardens.