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.
Hunger and Low Blood Sugar. The most obvious signs of a calorie-deficient diet are hunger and low blood sugar. When you don't eat enough food, you feel hungry, which is your body's way of communicating that you need to eat more. A lack of hunger, however, doesn't necessarily mean you're consuming enough calories.