How much water a cat should drink in a day depends on its weight. Generally, a cat needs to drink about 40-60 ml of water per kilogram of body weight per day. If a cat weighs 5 kg, then its water intake should be between 200-300 ml.

Water is essential for a cat's metabolism, cell structure, and elimination of toxins. Therefore, insufficient water intake can easily lead to urinary tract diseases in cats. To ensure your cat's health, owners should provide fresh water daily and monitor their water consumption. If your cat drinks excessively after meals, it may be because their cat food makes them feel thirsty or too salty; in this case, it's recommended to switch to a milder cat food.