I feed twice a day as well, when it's cold.

-Ground meat (beef&pork) with boiled rice and extra fat (beef&pork), oils (salmon&veggie), this is the basic food. Served warm.
-Whole eggs, veggie/fruit/berry-mix, liver; couple times per week
-Once a week is bone day (or chicken wings or turkey drumsticks), if it's not too cold.

All doghouses are insulated, some are heated with light bulb. Plenty of beddings.

Right now it's -30 celsius