I give mine 1/4 wafer a day, and they're doing great. The serving size for humans, if I remember correctly, is 2 wafers per day, and there's only 2 g sugar per serving. That means that for each wafer, there's only 1 g and for each chin-sized serving, there's only 1/4 g. I don't think that's that's too much sugar, is it? And it is healthy for them (with the good tummy bugs and all), and they've been on it for a little over a month with no ill effects. Also, they only ever get one other small treat a week (a rosebud, a few rosehip bits, or a small piece of whole-wheat pasta). Am I wrong?