Though some animals have elevated the powernap to an artform (think giraffes, dolphins, and bullfrogs), most creatures spend hours at a time oblivious to their surroundings. And since it’s a scary world out there, that means sleep spots are a reflection of where an animal feels safest.

For some, safety is a place to go—a drowsy leopard drapes itself over a high tree branch, while an arctic fox curls up in a secret den when it’s time to catch some z’s.

Others find safety in company. Sperm whales stick close to the pod to sleep, a dozen related females all ‘standing’ underwater to steal a few minutes of repose in the ever-perilous ocean. Ring-tailed lemurs and lion