How Much Water Should My Dog Drink Each Day?

Short answer: as a general guide, most adult dogs need about 50–60 ml of water for every kg of body weight each day under normal conditions — roughly 500–600 ml (about 2–2½ cups) for a 10 kg dog — and more in hot weather, after exercise, or if nursing. The number matters less than constant access: water should be down and available all day, not filled once or twice and left to run dry. Puppies drink more relative to their size than adults do, so keep their bowl fuller and check it more often. Below is the full range by weight, the signs that tell you if your dog is drinking too little or too much, and what to do about a dog that barely touches the bowl.

How much water is normal, by weight

This is a general guide for a healthy adult dog at rest in normal weather — not an exact number, because thirst genuinely varies day to day with activity, diet and temperature:

Your dog's weight	Roughly, per day
Up to 5 kg	250–300 ml
5–10 kg	300–600 ml
10–20 kg	600 ml – 1.2 L
20–30 kg	1–1.8 L
30 kg and above	1.5 L or more

A dog eating mostly wet or home-cooked food already gets some water from its meals, so it may drink visibly less from the bowl than a dog on dry kibble — that's normal, not a shortfall. Hot weather, exercise, and nursing all push the real number up.

Signs your dog is drinking too little, or too much

The number in the table is a starting point; these signs tell you more than counting millilitres does.

Too little

Watch for gums that feel dry or tacky rather than moist and slick, skin over the shoulders that stays "tented" for a second or two instead of springing straight back when you gently pinch it, sunken-looking eyes, low energy, and noticeably less urine than usual. Any of these, especially together, is worth a vet visit rather than waiting it out.

Too much

A dog that starts drinking noticeably more than usual for more than a couple of days — especially alongside more frequent urination, accidents indoors, or weight change — shouldn't just be monitored at home. Increased thirst like this can point to an underlying condition such as kidney disease, diabetes, or a hormonal disorder, and it needs a vet to look into why, not a smaller bowl.

Puppies need water available all the time

Puppies carry more water in their bodies relative to their size than adult dogs and have a faster metabolism, so they need steady access to fresh water rather than a bowl filled once or twice and forgotten. A puppy also dehydrates faster than an adult dog if it stops drinking. If a puppy goes without water for half a day or more, or refuses to drink and also seems dull, is vomiting, has loose motions, or is passing very little urine, that's a same-day vet visit — don't wait to see if it comes back on its own. A puppy simply going off water for no obvious reason is worth a vet call rather than a guess at home, since the possible causes range from something minor to something that needs quick attention.

"My dog barely drinks" — what to actually try

If your dog is eating and behaving normally but the bowl barely goes down, a few things genuinely help before you worry:

• Add a splash of water, or unsalted plain broth, to meals — this is often the easiest way to raise total intake without changing the dog's habits.
• Move the bowl. Some dogs won't drink near their food, near a noisy appliance, or in a spot they associate with being told off.
• Try a second bowl in another room, or a pet water fountain — some dogs drink more from moving water than a still bowl.
• Keep the bowl genuinely fresh. A bowl that's been sitting since morning, or smells of soap, puts some dogs off entirely — see the routine below.

A dog that "wants" water — goes to the bowl, sniffs or looks at it — but doesn't actually drink can be uncomfortable rather than simply uninterested: mouth or tooth pain, nausea, or feeling generally unwell can all look like this. If that keeps happening, or your dog is also eating less, seems low, or is panting more than usual, get it checked rather than trying to coax it along at home for days.

Is filling the bowl once or twice a day enough?

No — water should be down and available all day, every day, not rationed to one or two fill-ups. What we do change is how often we refresh it, not how often we make it available. Our free Gut Reset guide's routine is simple: a steel or ceramic bowl rather than plastic (plastic scratches and those grooves hold odour and bacteria more easily), washed with soap daily rather than just topped up, and the water itself changed twice a day, three times in hot weather. None of that needs a product — it's just a habit that keeps water something your dog actually wants to drink. If your dog's stools, appetite or energy still seem off even with a steady routine, our guide on the signs of poor gut health in dogs covers what else is worth looking at, and our feeding and dosing guide walks through the same daily routine in full.

Not visibly better by Day 30? Tell us and we refund 100% — no forms, no return shipping, keep the pack.