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In the wild, they do, yes; it's an activity called grazing. Domestic horses confined to stables, barns or drylots with no grazing area don't have this opportunity. It is primarily seen as a social and behavioural activity for horses; for one, it keeps the horse from being bored, it is a social bonding experience and activity, and it some how keeps a horse from acquiring stereotypical behaviour disorders like that seen in horses that have been confined for a long time. It is natural for a horse to be grazing at least 8 to 12 hours a day. Horses that do not have this opportunity develop stereotypies such as wind-sucking, weaving, pacing and cribbing because they are denied their natural behaviour and activity of grazing with their herd mates all day.
Horse
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A horse can have as big area for grazing just don't make it too small. I keep my horses in about 1-2 acres and my horse is healthy.
Horseracing. Without the horse the jockeys would look a little silly.
the answer is a hippopotamus. it has red sweat which is mistaken for blood
Sweating. A horse sweats to keep cool. The horse has the same cooling mechanism that humans do.
A graze just above a horses hoof.
the przwalskii horse is endangered because of lack of grazing areas, water areas and hunting.
A good grazing area and a salt block! :)
electrolytes, (vitamins and minerals lost when the horse sweats).
It all depends on the quality of the grazing. Normally you allow one acre of land per horse but on poor quality grazing I would say one horse per two acres. Poor grazing is better than good grazing for ponies, donkeys and mules. You might be able to get 75 or 80 horses on 72 acres but if the grazing were poor, a more realistic figure would be 40.