I don't understand the numbers on some of these things. Take Vital Cat rabbit treats for example. The only ingredient is rabbit. You would thank that would be very low carbs, but looking at the analysis, it's 38/41 - That's so high!
Those calculators can sometimes be complicated, especially for things like treats because all of the nutritional info is not always listed. Those treats and other freeze dried treats with one single ingredient are all fine, and my cat happened to love those ones