If you soak any kibble overnight in water in the fridg it is easier to digest and like wet food.
They hate it here when I recommend this site, but I can’t help it, as I have learned a lot!
http://skeptvet.com/Blog/category/nutrition/
If you are worried about the teeth, just brush the teeth every evening. The toothpaste should not be making him sick (only need a small amount). I use Petrodex 6.2oz size tube and a medium adult brush.
Believe it or not, my terrier is letting me use one of those throw away battery operated brushes.
See youtube for how to videos.
