It was once hypothesized that the amount of sleep an animal requires is directly proportional to the size of the said animal. This has proven to be false on many occasions. For example, giant armadillos who are around 40 pounds and 3 feet in length requires double the amount of sleep as humans. Giant armadillos sleep for 18 hours a day while the average human is recommended to get anywhere between 6-10 hours of sleep a night. Swipe through and discover animals whose sleeping habits might shock you.