Help! My Dog Doesn’t Drink Much Water! (Vet Answered)
This question has been answered by a vet
Veterinarian & Animal Behaviorist
With nearly two decades in veterinary medicine, Dr. Paola brings hands-on experience across multiple species. A graduate of the University of Guadalajara, she specializes in preventive care, animal welfare, and positive reinforcement training.
The Question
“Dear Dr. Paola,
Billy doesn’t drink much water at all during the day and then guzzles at night. He’s a Labrador. Is there something to worry about here?”– Sara
Quick Info about Billy
Hi Sara,
It’s great to see you are observing Billy’s habits so attentively. A healthy dog typically drinks about 50 to 60 milliliters of water per kilogram of body weight per day. For the average Labrador, that’s roughly 1.5 to 2 liters in 24 hours, which translates to about 0.75 to 1 ounce of water per pound of body weight in 24 hours, depending on size, activity, and diet. Measuring Billy’s total daily intake over several days can provide valuable insight. If he’s eating moisture-rich fresh or wet food, getting moisture-rich treats, or exercising less during the day, those factors could reduce his daytime thirst and shift his drinking to the evening.
It’s also worth considering environmental influences. Dogs may drink less during the day if they’re resting in a cool, quiet area or if their access to water is limited by routine or location. Increased movement, warmth, or activity in the evening could then trigger a natural spike in thirst. Subtle changes like using air conditioning during the day and having warmer indoor temperatures at night can also shift hydration patterns. It’s also possible that the water in his bowl becomes warm or stale during the day, leading him to wait until it cools down in the evening, when it’s more appealing to drink. Observing Billy’s routine and making sure fresh, clean water is always available and easily accessible throughout the day is a helpful first step.
While medical conditions such as chronic kidney disease, diabetes mellitus, or Cushing’s disease are associated with increased water consumption, these typically cause a more persistent, round-the-clock increase in thirst rather than a pattern confined to nighttime. Since Billy’s thirst is not constant, behavioral or environmental causes may be more likely. Still, if his total intake is above normal or if any other signs appear, a routine check with your veterinarian, supported by bloodwork and urinalysis, is the most reliable way to rule out early underlying disease. By keeping track of Billy’s total intake and observing his daily routine, you’ll be well-equipped to determine whether this is simply an environmental or behavioral pattern or something that merits a closer veterinary look.
Best!
Dr.Paola