I don't think there are any flathead cats in the waters around me (northern NY). There were a total of at least 6 bullhead, in two different locations on the same lake, a couple of the dead, and all of them just scarred and bleeding. It definitely seemed like something was going on. Also these bullhead were all 12"+, so it would have taken a huge fish to attack those, and there are no Pike in this lake. I had thought turtle, but it still doesn't explain why there are so many bullheads like this.