Here's why:
* Deep sleep: When cows sleep lying down, they can enter a deeper sleep state, known as REM sleep. This is where they experience the most restful and restorative sleep.
* Muscle relaxation: Lying down allows cows to fully relax their muscles, which is essential for a good night's rest.
* Safety: While lying down makes them more vulnerable to predators, cows often sleep in herds for safety, and will wake up quickly if they sense danger.
However, cows can also sleep standing up. This is especially common when they are in a safe and familiar environment, and they don't feel threatened.
How much do cows sleep?
Cows typically sleep for around 4-7 hours per day, with most of that sleep happening at night. They may take several short naps throughout the day, both standing and lying down.