Barn

Wolves are the witches of the animal world.

~ Katherine Rundell

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I have to believe that if three little pigs lived in a barn (a "house of wood" if you would), that they would be safe from a wolf assuming the barn was well built and the doors and windows were closed. So far as I know neither wolves nor dogs can "blow down" things. I don't think they can blow at all.

Now they do breathe. So if the story started as the big bad wolf BREATHED the house down, maybe that would work. But I think wolves probably value you their time. I'm guessing a wolf would go somewhere else to find something else to eat. Like a feral pig who didn't know how to build a barn.