I've a boxer and his first year was an ongoing saga of naughtiness, highlights of which included about 3 or 4 shredded duvets, a chewed up bluetooth headset, the demise of numerous pairs of slippers etc.
But by far the worst thing he did was turn on the tap in the kitchen one day when I was out, flooding the kitchen. I came back to about 3 inches of water on the floor, only for the fact that there is a slope on our kitchen floor, the whole house would have been drowned.
That was the day I ordered the crate!
Happily now, two years later, he is a reformed character and can be left to his own devices when I am out.