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.
Signs and Symptoms. 1  Abdominal pain with a burning or gnawing sensation. 2  Pain 2 - 3 hours after eating. 3  Pain is often made worse by an empty stomach; nighttime pain is common. 4  Pain may be relieved by antacids or milk. 5  Heartburn. 6  Indigestion (dyspepsia). 7  Belching. 8  Nausea. 9  Vomiting. 10  Poor appetite. 11  Weight loss.