[oldE]

You have likely heard someone say,"Healthy as a horse ". Horses were evolved to live in environments where they had to be constantly on the move to get feed and water. Many owners make the mistake of overfeeding and underworking the animals. Colic is a word which can freeze your heart. A horse cannot vomit, so if it gets something toxic ( half of the vegetation in the world seems to be toxic to horses), it may cause severe abdominal distress or be fatal. You haven't experienced the joys of equine ownership until you have been up all night walking a sick horse every half hour. (Walking can help the gut move things along. A horse that is not producing manure will die.)
As Seahawk said: rent the beast.

Best
Les