To some horses, twitching is just natural. But often times, the horse is twitching because of flies or other insects. twitching is just their way of getting the flies off of them.
just a twitch or ear infection
A horse that eats a lot
There is no known affects of too much biotin. It is a water solulable vitamin. Your horse can have not enough biotin, but there is no history of problems caused by an overdose of boitin. A good way to find more information is to google : horse too much biotin
Some say that Meth will make you twitch in your sleep. Weed can too.
blink hard; to blink more than is neccesary; to jitter; a cause of nervous or too much sugars of the cells
It is bad to whip your horse, if he/she is not doing anything wrong. If your horse, or pony is seriously not listening to you, you should lightly whip them, and not threaten them too much. Remember, if you whip your horse for little or no reason, imagine you being that horse. You would also be in pain, and confusion.
Sometimes people are hungry when they twitch. Other times, they might ve trying to fall asleep. Some people have disorders that make them twitch too
If the cougar had someone to help cut the horse up, refrigerate the parts, and serve them up in day-sized meals, then sure. By it self - no. An adult horse is a too big prey for a cougar to tackle, and much of the horse would spoil or rot before the cougar would be able to eat it.
Too much of anything can hurt your horse. I would be very careful turning a horse loose in a large hay field. Try turning him out for shorter periods of time, maybe an hour or two and then take him out. If he does well then extend his time by an hour or so. If he starts to look too fat or his crest gets hard and has a convex look on the topline, he is getting too much.
You can do this at any age.
MY body doesn't twitch when YOU sleep.^ that's an idiot right there -_-it would be because your having a dream and nightmares would be related with screaming (dogs would do similar too)
Daffodils can be harmful to a horse, if too much is eaten.