Recommended Amount
According to smalldogsparadise.com, small dogs need 8 oz. of water per 5 pounds of weight. Shih tzu puppies are very small, often only 2 to 3 lbs. According to this rule, a 2.5-lb. puppy would need approximately 4 oz. of water each day.
Other Considerations
Different shih tzu puppies will need different amounts of water, smalldogsparadise.com says. High levels of activity drive up the needed amount of water. Puppies on a dry food diet also will need more water.
Bottom Line
Your puppy knows when it needs water. Keep your puppy's water dish clean and full of clear water, and your puppy will drink water whenever it feels the need, according to allshihtzu.com.
References
Writer Bio
Crystal Bench is a senior studying applied mathematics at Brigham Young University, Idaho. Along with her Bachelor of Arts, she has clusters in French, 3-D art, and physical science. Bench is also an avid writer, with work ranging from short stories to nonfiction pieces of many kinds, and even a few forays into poetry.