A healthy horse at rest, in a cool environment with low humidity, eating lush green grass, and not producing milk may only have a requirement of one-half gallon per one hundred pounds of body weight per day.

• 健康的马在静息状态，低湿度与低气温，饲料为新鲜青草而且不需要哺乳小马，那么马匹每天大约每百磅体重需要一个半加仑的水。