There are 10 known amino acids that dogs must get from food sources since they cannot produce these amino acids on their own. Amino acids come from protein such as meat and eggs. It is interesting that dogs will often avoid eating food that has no amino acids. When reading a list of ingredients remember that quality protein comes from animal meat rather than “animal byproducts”. buy best dog food Another element that your dog cannot create internally is fatty acid. Fatty acids are necessary to sustain your dog’s life and provide for internal functions such as transporting fat-soluble vitamins, immune system functions, cellular function, brain function, and coat and skin health.