Good natural sources of this amino acid include dairy products, meat, fish, lentils, mushrooms, sesame seeds, leafy greens, soy protein and peanuts. (aminoacidstudies.org)
Contrary to popular belief, saturated fats are actually essential for many bodily functions, so you shouldn't try to avoid them if they are from good natural sources. (traineatgain.com)
AAFCO doesn't consider vitamin K to be a necessary additive for dog foods and there are many good natural sources for vitamin K such as liver, kelp, and fish meals. (dogfoodinsider.com)