Ever wonder how a dolphin sleeps while still swimming? Or how a giraffe sleeps while standing up? Cara Santa Maria, Narrator of Smithsonian Earth's "The Secret World of Animal Sleep" joins Cheddar to explore the wild world of sleeping animals. Marine mammals only shut down half their brain while sleeping, leaving the other half of their body to stay afloat and be alert for prey. She explains how the higher up on the food chain you are, the more sleep you get. That's why prey species like giraffes can only afford mere minutes of sleep at a time, while lions revel in over 20 hours of luxurious slumber a day. Arctic ground squirrels survive harsh Canadian winters through skilled hibernation. Entering a state of controlled hypothermia, their body temperatures drop to 27°F – the lowest ever recorded in a mammal.

Share:
More In Science
Report: Syphilis Cases In Newborns Rise
The CDC released a report with troubling statistics about the number of reported syphilis cases in newborns, with cases rising 10-fold in the last decade and nearly 32% in just one year.
Olympic Gold Medalist Swimmer Missy Franklin Is Raising Awareness About Genetic Diseases
Five-time Olympic gold medal swimmer Missy Franklin was at the top of her sport when a shoulder injury forced her to retire. After that, her father was diagnosed with a rare kidney disease that forced her family to come together to support him. Now Franklin is working with Otsuka Pharmaceutical to raise awareness of genetic diseases and ADPKD, the disease that affected her father.
Load More