✔ 最佳答案
most of the commical foods are added chimcals. Those are state they don't add any the sheld life is really short. So, only the basic food you could get it from market is the best source for your dog.
If you are thinking to offering supplyment to your dog, you have to make this move very carfully. because in excess of sort of minral or vitamits could be a problem. So need to speak to your vet.