Standing up sometimes laying down
Yes, horses do lay down to sleep, but it is less common for them to sleep in this position compared to standing up. Horses have a unique ability to sleep both standing up and laying down, and will choose their preferred position based on their level of comfort and sense of security in their environment.
standing ~MiniMuffin
Diumal. They have nothing to hunt in the night so they sleep. They position their rumps into the wind (if any), lock their joints, and sleep. Some older horses or retired racehorses may lay down to sleep and rest their joints.
Female horses sleep in the exact same places as male horses, neither sex has any one preferance when it comes to where they sleep.
Standing up. Only occasionally does a horse sleep with his legs folded under him, and only a few minutes a week does he sleep laying all the way down on his side to get some REM sleep.
Sea horses sleep by staying where they are
Arabian horses sleep like most other breeds of horses. Horses can doze on their feet and take little 'cat naps' throughout the day. They will spend a couple of hours on the ground sleeping in a 24 hour period. Most breeds of horses follow this same sleep/wake pattern.
they sleep laying down
The Ground
horses
Ragwort is poisonous to horses it is very dangerous
Probably when they get tired, like all other horses.