Cat Water Intake Calculator
Calculate exactly how much water your cat needs daily based on their weight and diet to prevent dehydration and support kidney health.
Daily Hydration Calculator
Why Hydration is Critical for Cats
Cats evolved from desert ancestors and have a low thirst drive. In the wild, they get most of their water from prey (which is ~70% water). Modern indoor cats, especially those on dry food, often live in a state of chronic mild dehydration.
Proper hydration helps prevent:
- Kidney Disease (CKD): Flushing toxins effectively reduces strain on kidneys.
- Urinary Crystals & Blockages: Dilute urine prevents crystal formation.
- Constipation: Water keeps the digestive system moving smoothly.
Signs of Dehydration in Cats
If you suspect your cat is dehydrated, perform the "Skin Tent Test": Gently lift the skin between their shoulder blades. If it snaps back instantly, they are hydrated. If it stays up or goes down slowly, they may be dehydrated.
Other signs include:
- Sticky or dry gums
- Sunken eyes
- Lethargy
- Loss of appetite
Frequently Asked Questions
How can I get my cat to drink more?
Cats prefer moving water, so a water fountain is often effective. You can also try placing multiple bowls away from their food and litter box, or adding a small amount of tuna juice (unsalted) to their water.
Is wet food better than dry food?
For hydration, yes. Wet food is approximately 75-80% water, whereas dry kibble is only about 10%. Feeding wet food is the easiest way to ensure your cat stays hydrated without relying on them to drink from a bowl.
Can a cat drink too much water?
Yes. Excessive thirst (polydipsia) and urination (polyuria) can be signs of diabetes, kidney disease, or hyperthyroidism. If you notice your cat draining the bowl much faster than usual, consult your vet.
References
- National Research Council (NRC) - Nutrient Requirements of Dogs and Cats.
- Cornell University College of Veterinary Medicine - Feline Renal Failure.
- Journal of Feline Medicine and Surgery - Hydration Strategies.