Never landed one but I have hooked into what I THINK were muskies twice, big ones. Both times I was walleye fishing, and something that didn't feel at all like a walleye hit, and bit through the line. Both times I was using worm harnesses. Can't picture what else would bite through the heavy harness line like that. Could have been hog walleye that were just fighting strangely, but something toothy is out there anyhow.