From the McDonalds website: Chicken McNuggets Ingredients: Chicken, water, salt, modified corn starch, sodium phosphates, chicken broth powder [chicken broth, salt, and natural flavoring (chicken source)], seasoning (vegetable oil, extracts of rosemary, mono, di- and triglycerides, lecithin). Battered and breaded with water, enriched bleached wheat flour (niacin, iron, thiamine mononitrate, riboflavin, folic acid), yellow corn flour, bleached wheat flour, modified corn starch, salt, leavening (baking soda, sodium acid pyrophosphate, sodium aluminum phosphate, monocalcium phosphate, calcium lactate), spices, wheat starch, dried whey, corn starch. Batter set in vegetable shortening. Cooked in partially hydrogenated vegetable oils, (may contain partially hydrogenated soybean oil and/or partially hydrogenated corn oil and/or partially hydrogenated canola oil and/or cottonseed oil and/or sunflower oil and/or corn oil). TBHQ and citric acid added to help preserve freshness. Dimethylpolysiloxane added as an anti-foaming agent.
I don't see Beef or Fish anywhere in there. Certainly not 'good' for you, but, I think there's some mis-information out there.
From the Wendy's WebSite, Their chicken nuggets: Chicken Breast With Rib Meat, Water, Corn Starch Modified, Sodium Phosphates, Salt, Whey Protein Concentrate. Breaded with: Wheat Flour, Water, Bleached Wheat Flour, Corn Starch Modified, Salt, Spices, Leavening (Sodium Bicarbonate, Monocalcium Phosphate, Sodium Aluminum Phosphate, Sodium Acid Pyrophosphate), Buttermilk Powder, Dextrose, Soybean Oil, Yellow Corn Flour, Citric Acid (flavor protector), Garlic, Yeast, Xanthan Gum (thickener). Cooked in: Hydrogenated Corn and Soybean Oil.