Two of my dogs (both Cavaliers, one 11 and one 10) have CHF. Angel, the older one, takes Vetmedin and a low dose of a diuretic, while Bailey takes just Vetmedin. I'd like to give them food that is as good for their hearts as possible. They are currently fed Taste of the Wild or Evo Small Bites kibble, and some kangaroo or beef mince, and will soon have their kibble + Ziwipeak canned food. Are these foods sufficiently low in sodium and high in things like taurine that help the heart? If not, what would be best to give them? I live in Australia, and so unfortunately don't have some of the brands available in the USA.