Bears. They're terrifying, but they're just like us! Especially the Norwegian ones:
"They had a hell of a party in there," cabin owner Even Borthen Nilsen told NRK. "The cabin has the stench of a right old piss up, trash, and bears."
The bear, and three cubs, are reported to have forced their way into the cabin by ripping a wall off.
And furthermore the bears had finished off all the food and drink in the house—including all the marshmallows, chocolate spread, honey and over 100 cans of beer.