“The animal that can survive for months without sleeping.
“They remain active. They don’t have any specific time for sleeping. Especially during the breeding season, they don’t sleep at all.
The Alpine Swift bird is renowned for its long flights. It spends most of its life flying. During migration, they have been observed flying continuously for up to 6 months. During this time, they rest very little.
Horses also sleep only for two to three hours during the day, and they complete this duration of sleep in several short intervals throughout the day and night. Horses usually sleep standing up. Deer also take approximately 2 hours of sleep, which they complete in intervals of three to five minutes throughout the day and night.
Bottlenose dolphins have the ability to sleep with half of their brain at a time, while the other half remains awake and functional during sleep. Thus, they remain alert to their predators even during sleep. With half of their brain, they also complete their sleep in several intervals of minutes to half an hour
