How do
Describe the sleeping habits of cows, horses and migratory birds.
How does a crocodile sense its surroundings?
Answers
Answer:
Under ideal conditions, cows lie down for approximately 14 hours per day. During that time, they sleep for only 30 minutes
Horses can sleep both standing up and lying down. ... Horses may spend anywhere from four to fifteen hours a day in standing rest, and from a few minutes to several hours lying down. However, not all this time is the horse asleep; total sleep time in a day may range from several minutes to two hours.
Explanation:
They found that during autumn and spring, when the birds are normally migrating, they reverse their typical sleep patterns, staying awake at night and resting during day. But instead of sleeping for long stretches at a time, the birds took several naps a day, each one lasting only 9 seconds on average.
They respond to the slightest disturbance in surface water, detecting vibrations and small pressure changes as small as a single drop. This makes it possible for crocodiles to detect prey, danger and intruders, even in total darkness. These sense organs are known as domed pressure receptors (DPRs).
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