Water and hydration
How much water do dogs get from wet food?
Last updated 23 September 2026 · How we write and check this
Short answer
Standard wet dog food is roughly 70 to 85 percent water by weight, so a 400 g can typically contains around 280 to 340 ml (9.5 to 11.5 fl oz) of water built in. For a small dog eating one or two cans a day, that alone can cover a large share of their total daily fluid needs.
The moisture content in typical wet food
Most canned or pouch dog foods list moisture content on the label, usually falling between 70 and 85 percent. A 400 g can at 78 percent moisture, for example, contains about 312 ml of water, roughly the same as a large glass.
Comparing that to a dog's daily target
A 10 kg dog needing 500 to 600 ml of total fluid a day could get well over half of that from two 400 g cans of wet food alone, leaving a smaller amount to come from the water bowl. Larger dogs eating proportionally more wet food see a similar effect scaled up.
Why the bowl still matters
Food moisture is absorbed gradually during digestion, while drinking water provides a faster top-up, especially useful after exercise or in heat. Even a dog getting most fluid from wet food benefits from having clean water freely available throughout the day.
Key takeaways
- Wet food is typically 70 to 85 percent water by weight.
- A 400 g can often contains around 280 to 340 ml (9.5 to 11.5 fl oz) of water.
- Wet food can cover a large share of a small dog's daily fluid target.
- Fresh drinking water should still be available regardless of food moisture.