Health
May 2, 2026 · 3 min read
Every day, dogs lose fluids through breathing, activity and normal body processes, so that water needs to be replaced regularly. Proper hydration helps support your dog’s health and overall well-being.
On average, a healthy adult dog needs around 40 to 70 ml of water per kilogram of body weight per day:
If your dog eats dry food, they will usually need more water. With a wet-food diet, part of their fluid intake comes from meals.
The amount a dog drinks can change from day to day. For example, after a walk or during hot weather, the bowl may empty faster than usual — and that can be completely normal.
Thirst often increases with:
Pay attention if your dog:
These signs can point to dehydration, so do not delay contacting a veterinarian.
Increased thirst is also worth paying attention to. Sometimes it is linked to hot weather or diet, but if your dog suddenly starts drinking noticeably more than usual without a clear reason, it can also be associated with various health issues. This is especially important if the increased thirst comes with frequent urination, weight loss, weakness, vomiting or a reduced appetite.
There is no single number that fits every dog. Look at your dog’s weight, lifestyle and the weather. If your dog is active, eating well and feeling good, small variations are usually nothing to worry about. Sudden changes in thirst, however, should not be ignored.
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