Animals need fresh water for their bodies to function. They gain water not only through the action of drinking but also from the food they eat. Water is vital for bodily functions such as regulation of temperature, nutrient uptake, removing wastes, body weight, and health.

Uses of water to animals - Water is needed by the animal in order to keep its body at a relatively stable temperature. It keeps the body cool through the production and evaporation of sweat. Water is necessary for digestion and absorption of feed, and aids in the hydrolysis of nutrients like carbohydrates, fats and proteins.