I wish I could believe that eliminating sugar from the diet would kill cancer. I have my nearly 11 year old Labrador on essentially a zero carb raw food diet. His two external mast cell tumors appear to be stalled and not growing but so far there’s little sign of them regressing. He seems as happy and as lively as ever, battling for 18 months (only the last three on the low carb diet). So maybe it’s doing him good but the cancer isn’t regressing.
Is he getting healthy fats? Have you heard of the Budwig cancer diet, I guess it’s been adapted for pets, although seems to me like it could cause some diarrhea - I know with humans it’s basically flaxseed oil and cottage cheese, but the amount of oil can be slowly increased. You can Google Budwig cancer diet for pets.
I definitely believe sugar fuels cancer growth - and what do they tell cancer patients who can’t eat? Drink a supplement full of sugar!