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.
There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Some possible causes of abnormal hunger include: Marijuana - a form of cannabis. 2  Brain disorder causing increased eating (hyperphagia) include: Encephalitis. 3  See also causes of overeating and appetite changes.  Strenuous 1  exercise. Recovery from illness.