1: The Bullfrogs sleep only when necessary to conserve energy.

2: Alaskan Salmon do not sleep during their migration journey.

3: Green Sea Turtles sleep by resting half their brain at a time.

4: Some breeds of Sharks must keep moving to breathe.

5: Ants take power naps throughout their workday.

6: Alpine Swifts can fly continuously for months.

7: African Elephants sleep less than four hours a day.

8: Giraffes sleep for short periods standing up.

9: Horses sleep only 2.9 hours per day in short intervals.