>>1176
The bigger the animal and the more complex its emotions, the stronger negative energy might impregnate into its flesh. If you are serious about keeping energetically clean and already abstain from sex, drink from natural streams, cultivate your own vegetables, etc., make sure to energetically cleanse the meat from anything bigger than a chicken. If you don't do those things, cleansing your food is not going to make that much of a difference, although it never hurts.
Fish in general is fine. But mammals (including sea mammals), are trickier.