Dolphins are capable of what is known as the Unihemispheric sleep, in which only a brain hemisphere goes into a deep sleep while the other remains awake for the control of vital functions like, in the first place, respiration, since this act is voluntary in this animal. This allows dolphins to sleep under water without […]
The koala sleeps between 18 and 22 hours every day, which makes it the mammal with the longest sleep cycle in the world. Given that its life expectancy is 15 years, this animal spends 12 years of it sleeping. And to top it all, it spends most of its waking hours eating. What an exciting […]
After reading the article’s title, there is 80% of chance that you will yawn too. In reality, this reflex often linked to fatigue, boredom, stress or overwork,is contagious. The mere mention of yawning may be sufficient to cause it. Interestingly, this contagion has also been observed in chimpanzees. However, the real cause of this contagious […]
Giraffes need less sleep than any other mammal. In fact, they sleep between 10 minutes and 2 hours over a time span of 24 hours which is an average of 1 hour and 9 minutes of sleep a day. Giraffes have adapted themselves to the environment where they live in order to stay awake as […]