Dog Water Intake Calculator

Estimated Daily Water Requirement

20 fl oz

Approx. 453.592 ml

This estimate can also be affected by the dog's age, climate, diet and more.

Photo of calculator author Wes NolteCreated by Wes Nolte.Last updated Jul 1, 2024. References.

How much water should a dog drink?

A dog wearing a harnessThe primary factors influencing how much water a dog should drink include:
  1. Size and Weight: Larger dogs generally require more water than smaller dogs.
  2. Activity Level: More active dogs will need more water to stay hydrated, especially after exercise.
  3. Diet: Dry kibble diets require more water intake than wet or fresh food diets.
  4. Age: Puppies and older dogs may require more water due to growth and health needs.
  5. Climate and Temperature: Hot weather increases a dog's water needs, as they are more likely to pant and lose moisture.
  6. Health Conditions: Illnesses such as kidney disease, diabetes, or infections can affect water requirements.
  7. Pregnancy/Lactation: Pregnant or nursing dogs typically need more water to support themselves and their puppies.
  8. Medications: Some medications can lead to increased thirst or dehydration.

A general guideline is that a healthy dog should drink about 1 ounce (30 milliliters) of water per pound (0.45 kilograms) of body weight each day. For instance, a 40-pound (18-kilogram) dog should drink roughly 40 ounces (about 1.2 liters) of water daily. The below table provides an estimate of the required water intake for your dog based on these values.

Weight (kg)Weight (lb)Daily Water Intake (ml)Daily Water Intake (oz)
511250 - 3508 - 12
1022500 - 70017 - 24
1533750 - 105025 - 35
20441000 - 140034 - 47
25551250 - 175042 - 59
30661500 - 210051 - 71
35771750 - 245059 - 83
40882000 - 280068 - 94
45992250 - 315076 - 106
501102500 - 350085 - 118

Making sure your dog has enough water

Ensuring a dog is getting the right amount of water involves a few simple but effective steps:

  1. Provide Constant Access: Always have fresh, clean water available for your dog, and refill the bowl frequently.
  2. Monitor Daily Intake: Measure how much water your dog drinks daily. If there's a sudden decrease or increase, consult a vet.
  3. Gum Test: A well-hydrated dog's gums should be moist and slick. Sticky or dry gums may signal dehydration.
  4. Skin Elasticity Test: Gently pinch the skin between your dog's shoulders. If it snaps back quickly, the dog is hydrated; if it takes time, they might be dehydrated.
  5. Consider Diet: Dogs on dry kibble need more water than those eating wet or fresh foods.
  6. Watch Behavior: Unusual fatigue, lack of appetite, or excessive panting can be signs of dehydration.
  7. Adapt for Climate and Activity: In hot weather or after vigorous exercise, offer extra water.
  8. Consult a Vet: If you're unsure, seek a vet's advice to determine the correct hydration needs based on your dog's health.

How do I get my dog to drink water?

If your dog is not drinking enough water, you can encourage them using these strategies:

  1. Flavor the Water: Add a bit of low-sodium broth (like chicken or beef) or a splash of tuna juice to make the water more enticing.
  2. Use Ice Cubes: Some dogs enjoy playing with and chewing on ice cubes. You can also freeze low-sodium broth into cubes for a tasty treat.
  3. Offer Multiple Bowls: Place water bowls in different locations, making it easier for your dog to find one.
  4. Fresh and Clean: Make sure the water is fresh, clean, and at a comfortable temperature. Wash the bowls regularly to avoid bacteria buildup.
  5. Change the Bowl: Some dogs have preferences for certain bowl materials, so try using different types, like stainless steel, ceramic, or plastic.
  6. Water Fountain: Dogs sometimes prefer moving water. Consider a pet water fountain that circulates water.
  7. Wet Food: If your dog is on dry kibble, mix in some wet food or a little water to increase hydration.
  8. Routine: Offer water regularly, especially after walks, exercise, or playing.
  9. Check for Health Issues: If your dog consistently refuses to drink, consult a veterinarian to rule out any health problems.

Why is my dog drinking so much water?

A dog drinking too much water could be due to a variety of reasons, ranging from benign to serious. Some potential causes include:

  1. Diabetes: Dogs with diabetes may experience excessive thirst as one of the primary symptoms, along with increased urination.
  2. Kidney Disease: Damaged kidneys can lead to excessive thirst because the dog's body isn't able to properly filter and conserve water.
  3. Cushing's Disease: This condition results in high cortisol levels, leading to increased thirst and appetite.
  4. Medications: Some medications, such as steroids or diuretics, can cause increased thirst as a side effect.
  5. Infections: Urinary tract infections or other illnesses can cause dogs to drink more water.
  6. Hypercalcemia: Elevated calcium levels can cause increased thirst and urination.
  7. Psychogenic Polydipsia: This is a behavioral condition where a dog drinks an excessive amount of water without an underlying medical cause.
  8. Dehydration Recovery: After intense exercise or a hot day, dogs might drink large amounts to rehydrate quickly.
  9. Dietary Changes: A switch to a saltier diet or one that increases thirst can result in more drinking.
  10. Pain or Discomfort: Some dogs drink more due to stress or discomfort, seeking relief.

References

  1. National Research Council, Division on Earth, Life Studies, Committee on Animal Nutrition, Subcommittee on Dog and Cat Nutrition, 2006. Nutrient requirements of dogs and cats. National Academies Press.