Sep 20, 2024, 09:40 PM IST
Known for staying active even when resting, bullfrogs have been studied for their ability to stay alert without sleeping.
Dolphins let one half of their brain sleep at a time, allowing them to continue swimming and breathing.
Like dolphins, whales sleep one hemisphere at a time to maintain their movement and breathing.
Jellyfish have no brain and experience rest-like states but do not sleep like other animals.
While they may take short rests, cockroaches never enter a deep sleep state.
Many shark species keep moving constantly, as water needs to pass over their gills to breathe, preventing sleep.
These creatures do not have a central nervous system, so they don’t sleep in a conventional sense.
Ants take short breaks throughout the day but do not experience a continuous sleep cycle.