Sep 1, 2024, 04:32 PM IST
They sleep with one eye open to stay alert for predators and maintain movement for breathing.
Horses can sleep standing up, often with their eyes partially open, to quickly react to danger.
They keep one eye open while sleeping to watch for prey or threats.
Some owls can rest with one eye open to stay vigilant in their environment.
Snakes lack eyelids, so their eyes remain open even when they're at rest.
Many fish sleep with their eyes open since they don’t have eyelids.
Sharks sleep with their eyes open because they don’t have eyelids and need to keep moving to breathe.
Like dolphins, whales sleep with one eye open to keep part of their brain alert while resting.