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Cats are famous for drinking little: they descend from desert felines, accustomed to obtaining water from their prey. However, in a modern diet, especially one based on kibble, water intake becomes critical. Let’s look at the rules.

The Basic Rule

An adult cat needs 40-60 ml of water per kg of body weight per day. So:

  • 3 kg cat: 120-180 ml.
  • 4 kg cat: 160-240 ml.
  • 5 kg cat: 200-300 ml.
  • 6 kg cat: 240-360 ml.

This amount includes both water drunk + water present in food.

Wet Food vs. Dry Food

Wet food contains 70-80% water, while kibble has only 5-10%. The result:

  • Cat on wet diet: gets most of the water from meals.
  • Kibble cat: has to drink almost all its water from the bowl.

Cats on only kibble are at the highest risk of chronic dehydration and urinary problems.

Factors That Increase Water Needs

  • Summer heat.
  • Intense physical activity.
  • Pregnancy/nursing.
  • Advanced age (risk of kidney failure).
  • Very dry food.
  • Some health conditions (diabetes, hyperthyroidism).

Signs of Poor Hydration

  • Very concentrated, scant urine.
  • Dull, dry coat.
  • Constipation.
  • Lethargy.
  • Skin tent test: gently pinch the skin on the neck; if it doesn’t return immediately to position, it is dehydrated.

Tricks to Encourage More Drinking

1. Water Fountain

Cats love running water: a cat fountain significantly increases intake.

2. Multiple Bowls

Place them around the house, away from the litter box and food.

3. The Right Bowls

Wide, shallow, made of ceramic or glass (no plastic, which imparts flavor). Avoid narrow bowls that can annoy the whiskers.

4. Always Fresh Water

Change it at least once a day, twice in summer.

5. Tap Water or Flavored

Some cats prefer slightly “flavored” water: try a splash of tuna cooking water (without salt).

6. Wet Food

The most effective way to ensure proper hydration.

When to Worry

  • Sudden change (drinking much more or much less).
  • Persistent excessive thirst: can be a sign of diabetes, kidney disease, hyperthyroidism.
  • Severe dehydration.

In all these cases: veterinary visit.

Before We Say Goodbye

Proper hydration is fundamental to a cat's health: it protects the kidneys, bladder, and digestive system. A fountain, a few extra bowls, and a wet diet can make all the difference. Your cat will live better and longer.

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