Bullfrogs are known for being very active during the night and are believed to be capable of staying awake for long periods.
Some species of sharks, like the great white shark, need to keep moving to pass water over their gills for oxygen. This means they need to stay partially awake even during rest.
Horses have a unique sleep pattern where they can have short periods of deep sleep while standing. They also require much less sleep than humans.
Walruses can sleep in the water, floating on the surface and holding on to ice with their tusks. They can stay in this position for hours.
Worker ants take short naps throughout the day, lasting only a few minutes. Queens, on the other hand, have longer periods of sleep but still much less than most animals.
Elephants are known for having short sleep durations, often sleeping for just a few hours each night. They may also take short naps throughout the day.
Giraffes have brief and irregular sleep patterns, often sleeping for short durations while standing. They are known to have one of the shortest sleep requirements among mammals.
These birds are known for their incredible ability to stay in flight for months without landing. They sleep while flying, with one hemisphere of their brain at a time.