How long can a cat go without water? A cat's ability to tolerate thirst is affected by a number of factors, including health, dietary and environmental conditions.

In general, cats that rely solely on water from food may be able to go for days to weeks without additional water, but this does not mean it is healthy or desirable. The cat's body needs water to maintain normal physiological including digestion, excretion, thermoregulation, and the transportation of nutrients.

Chronic dehydration can lead to serious health such as kidney damage, urinary tract and even death. Therefore, it is necessary to ensure that the cat has fresh water available at all times.