One of the primary reasons horses sleep standing up is to stay alert and ready to escape predators. In the wild, lying down ...

So, do horses sleep standing up? While we need to lie down to sleep, horses can sleep while standing up and while lying down, although they only enjoy REM (rapid eye movement) sleep, which is a ...

but an adequately rested horse requires at least 25 minutes of REM sleep per day, which can only happen while lying down, Matlock said. Because of this, horses must lie down every day. If they don ...

but an adequately rested horse requires at least 25 minutes of REM sleep per day, which can only happen while lying down, Matlock said. Because of this, horses must lie down every day. If they don ...