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.
Characteristic symptoms of starvation include: 1  shrinkage of such vital organs as the heart, lungs, ovaries, or testes, and gradual loss of their functions. 2  chronic diarrhea. 3  anemia. reduction in muscle mass and consequent weakness.  lowered body temperature combined with extreme sensitivity to cold.