You can feed them all kinds of diets as long as they contain easily digestible ingredients
with appropriate amounts of proteins, fats, amino acids, vitamins and minerals that they need.
A couple of commercial Science Diet (made by Hill's) blends are safely low in sodium
with appropriate amounts of protein, but how suitable they are depends completely on how extensive your dog's heart disease is.
Typically, restricting your carbohydrates to 30 or 40 grams per day, along with
an appropriate amount of protein, is enough to «starve» your brain into ketosis.
To gain muscle, an athlete needs to add
an appropriate amount of protein in his diet plan.
To aid you in determining
the appropriate amount of protein and types of protein to reach that magical 2 to 3g of leucine at meals / snacks, see chart below.
For example: if the goal of a prescribed diet is to give high - quality protein, and low amounts of phosphorus and calcium in order to fight bladder stones, then there may be
an appropriate amount of protein but, lower fat in the diet.
Studies have shown that if left to eat whatever they want, cats will consume
the appropriate amounts of protein, fat, and carbohydrates.