Question

How many hours a day do cows sleep?
A) 5-8 hours
B) 3-4 hours
C) 10-15 hours
D) 20 hours

Answer 1

Hint: The sleep duration of cows is approximately half the duration to that of humans.

Complete answer:
Humans sleep, on an average, 8 hours per day. Cows need relatively little sleep than humans. They sleep for about 4 hours per day.

Additional information:
While cows spend $16\%$ of the day sleeping, they drowse or sleep lightly for about 8 hours a day. Most four-legged animals are bestowed with an amazing capability to doze for some time while standing. This is a slow wave sleep or just a state of drowsiness. But to sleep deeply, it has to lie down. And this is also vital that the cow doesn’t stand for too long for it can disrupt its natural behaviour cycle.
Brown bats sleep for about 20 hours a day. They are most active in the night between the hours of dusk to dawn. Mice sleep for about 13 hours a day.
So, the correct answer is option B) 3-4 hours.

Note: There are three types of sleep pattern – Monophasic, Biphasic and Polyphasic. Monophasic sleep patterns occur when an individual sleeps only once a day i.e. around 8 hours or more at a stretch without interruptions.E.g. Bats. Biphasic sleep pattern involves a longer sleep for about 5-6 hours during night accompanied by a shorter sleep or nap of 30-40 minutes during the day. This sleep pattern is recommended for improved memory and increased freshness. Polyphasic sleep pattern involves resting multiple times a day. Cows are polyphasic sleepers. Their sleep pattern includes a stretched, undisturbed 3-4 hours of sleep with multiple 20-30 minutes naps throughout the day.