Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter.
Daily water consumption varies quite a bit. Season of the year, workload, reproductive status, diet, and climate factor into the volume of water needed by a particular horse on a specific day. As a starting point, the average horse drinks between 5 and 10 gallons (19 and 38 liters) of water each day. The horse may need slightly less if it is grazing lush pasture because fresh grass contains a high percentage of liquid.
So a 1000 lb lactating beef cow may drink around 15 to 20 gallons per day, whereas a 1000 lb lactating dairy cow may drink around 30 to 40 gallons a day. If a certain feed is higher in salt content than another, a bovine will drink more water to counteract the amount of salt that is found in the feed.