How do animals fall asleep so quickly?

Question

Obviously, my cat doesn’t watch TikTok, but there must be some things that keep it up at night.
No cows are hooked on melatonin.

In: Biology

Answer 1

As a human animal after a long day I fall asleep once my head hits the pillow. Animals tend to sleep when they are sleepy and especially not when the clock tells you to sleep so you can get your 8 hours.