My vet told me about a site you can go to that's been developed by vets and animal nutritionists- you plug in all the stats about your dog and it gives you the proper menu complete with needed supplements that aren't in sufficient supply in cooked people foods. You have to pay a small fee, but she didn't say how much or what the site is called. Maybe you can google it. I'll call and ask her if you can't find it. She said if I cooked my own dog food I would have to add calcium by giving Tums and some other minerals.