Walmart injects water into all of their meat to increase the weight.
If you see on the label that it has chicken broth added for flavor or some such crap, then it has that added water along with extra sodium. You pay for the water weight in that chicken. I learned that from a dog rawfeeding group I belong to. The “enhanced” meat - both chicken, pork and beef - make some dogs react with diarhea which mine were. Found chicken at our local HEB with no enhancements. We raise out own beef - longhorn, very low cholesteral, and have venison as well.