The closest humans get is sleeping in a chair or the astronauts in the International Space Station who sleep in bags stuck to the walls. Horses do lie down to sleep as well as Zebras. Get this from a library! It is just that they sleep more standing up then they do down. Nature Why do bats live in caves? They will usually sleep standing while leaning against a tree or something else that is big enough to hold their weight. These tall mammals have therefore evolved to have very skimpy sleep needs. Animals that hibernate choose various methods to tackle temperature and other issues during the cold. An Exhaustive List of Animals That Hibernate. While we are struggling with sleeping problems and discovering healthy sleep-promoting techniques, these animals can spend more than 80% of their time sleeping every day. Many animals adapt themselves according to the changes in the environment. Flamingos (Who are not animals) Half sleep standing. The only mammals that can sleep standing up are large herbivorous mammals, like horses. For the deepest sleep, walruses will either hook their tusks onto a stable piece of ice or move to land. How many animals can sleep standing up? For smaller animals the reduction in leg springiness outweighs this benefit. Nature Are zebras black with white stripes or white with black stripes? How animals sleep. Horses: Not only can they sleep standing up, but horses need merely two and a half hours of sleep a night. They take quick naps that last as long as five minutes through the day and all in all manage 30 minutes of sleep a day, topping the list of animals that need the least sleep. Yes, moose generally sleep standing up. Sounds good for me… Check out 10 Most Sleepiest Animals On Earth below. Walruses can sleep up to 19 hours at one time. Spending much of their entire lives in dreamland! Indeed they rest so little, that up until the 1950s, researchers thought they didn’t sleep at all. The sentence “The quick brown fox jumps over a lazy dog.” uses every letter of the alphabet. No, rats cannot sleep standing up. The scientific name of the red fox is Vulpes vulpes. Staying alert while sleeping is especially important to this species. Giraffes Giraffes need less sleep than any other mammal. While humans prefer to sleep lying down there are a number of mammals that can sleep standing up. For starters, the idea that these animals only sleep on their feet isn't right. Whether it is staying away from predators, keeping warm or remembering to breathe, there is lots to consider when it comes to sleep and animals have come up with many weird and wonderful solutions. Most hoofed herbivores—horses, cows, camels etc.—are able to sleep standing up. Nature What is the average number of legs for an animal? There are a number of mammals that can sleep standing up. Nature How many species have yet to be discovered? One such adaptation is hibernation during winter. Nature How did humans tame wolves? Horses, zebras and elephants sleep standing up. Nature Are zebras black with white stripes or white with black stripes? Everyone loves a good nap, but finding the time and place can be difficult for wild animals. Part of the reason that they do this is that it is important for their digestion processes. Giraffes: These tall animals can get by on just two hours of sleep a day (and like horses, those minutes can be split up into smaller chunks).