Pike are crazy, when I lived in Wisconsin I had a baby pike, honestly no more than six inches hit a double trebble surface bate, he managed to get two of the hooks in his mouth. The lure was nearly as big as he was. And I totally beleive the story about the duck in the muskies mouth. I don't know how big it was but I seen a big northern surface and take a mallard with ease. If they want it they will go after it no matter how big it is, they may not be successful, but they will go after anything if the mood strikes them. But from what I've seen and heard Canada is the fresh water fishing king. Funny, on a side note, I also was told by a friend that he was trolling and had a stupid gull sweep down and hit a lure.
For a while he said it look like he was flying a "bird kite".
Would have liked to see that,