Tuna has some good things
in it, particularly the
omega-
3 fatty acids, which are helpful for kidney failure
in dogs. However, tuna also tends to have some other qualities, not so helpful. Some tuna have high levels of mercury, for example, and all tuna is really too high in phosphorus to be advantageous to kd dogs. You would be much better feeding human grade (that means meat designated for humans to eat) chicken, lamb, or beef.