Giraffes only need 5 to 30 minutes of sleep in a 24-hour period.

Giraffes only need 5 to 30 minutes of sleep in a 24-hour period.

Giraffes spend most of their lives standing up; they even sleep and give birth standing up. Also they only need 5 to 30 minutes of sleep in a 24-hour period!

Source, Image credit: thebobstu