Giraffes Sleep Longer Than 30 Minutes A Day
Giraffes actually have fairly normal sleeping patterns. Similar to human beings, giraffes usually sleep at night and take brief naps in the afternoon. A study conducted recently concludes that the average giraffe sleeps roughly 4.6 hours a day.
Sharks Don't Die if They Stop Swimming
Although there are a few species of shark that need to continuously move to push water through their gills, not all sharks share this same evolutionary problem. Bottom feeding sharks, like lemon and nurse sharks, can pump oxygen-rich water through their gills without swimming. In fact, all sharks can survive for long periods of time without moving, simply because their bodies store oxygen differently from ours.