Stay baway from soya as it causes cancer as does corn. I feed mostly healthy scraps from the kitchen. They get eggs,cooked chicken bones which are a great source of cal, oranges,apples,bird seed, whole grain bread, rice, pasta, of course I only have 5 so it's easier. I'd say collect cooked chicken bones and feed them to the moms they need it! mine also get holistic dog food w/o corn,dog cookies, they have a very varied diet.