The average dog sleeps for about 12 to 14 hours per 24-hour cycle. Thatâs just the beginning, though. Puppies, who expend a lot of energy exploring and learning may need as much as 18 to 20 hours.
Although individual differences exist, the list below can provide some common hunger symptoms: 1  Feeling of emptiness in stomach. 2  Gurgling, rumbling or growling in stomach. 3  Dizziness, faintness or light-headedness. 4  Headache. Irritability, easily agitated.  Lack of 1  concentration. Nausea.
Some people start taking vitamins in an effort to be healthier; at the same time, they increase their exercise or go on a reduced-calorie diet, either of which could cause them to feel hungry. Check with your doctor to make sure you don't have a more serious medical problem, as diabetes, hyperthyroidism, low blood sugar and Graves' disease can also increase hunger.