Correct me if I'm wrong and this is only hear say but someone told me the carp spawn and lay eggs and the cats chase them around and knock the eggs out of em and eat them . There for you see the carp spawning you know for a fact there are cats in the area. At the time when I was told this the carp were indeed spawning and we were fishing in the general area of them with shad and cut up carp .this was the end result of that trip :