"Quality protein" refers to a type of protein that provides essential nutrients and is easily absorbed and used by our bodies. It contains all the necessary amino acids needed for growth, repair, and overall health. Full definition
Look for a fair amount of high quality protein sources such as meat and chicken. (caninejournal.com)
It still, of course, pays to watch your diet closely and try to stick to good high quality protein sources. (eatrecyclerepeat.com)
There is lots of good quality protein in this food, starting with the first ingredient — chicken — and followed by the fourth ingredient which is chicken liver. (dogfoodinsider.com)