how much fluid should a dog drink a day
1 Size: On the average, a healthy dog drinks about 1/2 to 1 ounce of water per pound of body weight per day. 2  Food: A healthy diet is as important as water and the type of food your dog eats affects his water intake.ow much and how carefully you have to monitor him depends on several factors: 1  Size: On the average, a healthy dog drinks about 1/2 to 1 ounce of water per pound of body weight per day.