Oddly, some dogs are quite selective about the poop they are willing to eat. Some favor only poopsicles (frozen poop). Others will eat only the feces of a particular animal, and still others only indulge their habit at certain times of the year.
The normal blood glucose level (tested while fasting) for non-diabetics, should be between 3.9 and 5.5 mmol/L (70 to 100 mg/dL). The mean normal blood glucose level in humans is about 5.5 mmol/L (100 mg/dL); however, this level fluctuates throughout the day. Blood sugar levels for those without diabetes and who are not fasting should be below 6.9 mmol/L (125 mg/dL).
For a non-diabetic, blood sugar levels should be between 70-120, depending on what you've eaten or drank. It is normal for blood sugar to go up a bit after a meal, but not over 120 or so. A normally functioning pancreas will secrete the insulin needed to compensate for whatever you have eaten, keepng the blood sugar within a normal range.