Jan 19, 2025, 08:40 PM IST
Horses can sleep standing up due to a unique "stay apparatus" that locks their legs in place.
Elephants can rest standing, though they usually lie down for deep sleep.
Cows can sleep while standing, thanks to their powerful leg muscles that allow them to remain stable.
Giraffes can take naps standing, though they sleep lying down for deeper rest.
Like horses, zebras can sleep standing by locking their legs in place.
Flamingos often sleep standing on one leg, which helps conserve body heat.
Kangaroos can doze while standing, particularly when they feel safe.
Bison can sleep while standing due to their sturdy legs.