Turns out that lying down to catch some Zs is not universal. Some animals skip the whole “horizontal nap” deal and snooze upright like it's no big deal. It's a quirky, gravity-defying habit that makes ...

Cats are famous for their ability to nap anywhere and everywhere, but horses have a cool naptime trick too. They can get some shut-eye while standing up! (Why couldn’t humans have inherited this ...

It’s a strange sight the first time you see it: a horse standing still, head slightly down, eyes open and slightly unfocused but not closed. There’s no struggle, no evidence of effort being made – ...

When you watch horses in the pasture, you often see them standing seemingly motionless in the sun–with half-closed eyes and a relaxed lip. But are they really sleeping while standing, or is it just an ...