If you've ever passed by a field of horses at night, you've probably noticed that they rarely lie down to sleep. So why do these mammals sleep standing up? The answer is one of survival ...

Why don’t horses sit or lie down even while sleeping? – A question from Zulfiqar. I’m glad you have asked about one of the mistakes lots of people make about horses. It’s true they do have ...

Most four-legged land herbivores—cows, moose, rhinos, bison, and horses among them—can doze lightly on their feet, but they have to lie down to sleep deeply. Even still, for those of us who ...