Clawmate
Get Started
💧
🐱
See vet within 24-48 hours

Cat Drinking More Water

Increased water intake (polydipsia) in cats often signals kidney disease, diabetes, or hyperthyroidism — three of the most common conditions in senior cats.

Quick Answer

Cat drinking more water can have several causes. Increased water intake (polydipsia) in cats often signals kidney disease, diabetes, or hyperthyroidism — three of the most common conditions in senior cats. See vet within 24-48 hours. Common causes include chronic kidney disease, diabetes mellitus, hyperthyroidism.

Possible Causes

common
Chronic kidney disease

Failing kidneys cannot concentrate urine, so cats lose more water and drink to replace it.

common
Diabetes mellitus

High blood sugar spills glucose into urine, drawing water out and increasing thirst.

common
Hyperthyroidism

Overactive thyroid increases metabolism and urination, driving increased water intake.

possible
Urinary tract infection

Bladder infection causes frequent urination, prompting cats to drink more.

possible
Medication side effects

Some drugs increase urine output, so cats drink more to maintain hydration.

rare
Liver disease

Liver dysfunction can affect fluid balance and sometimes increase thirst.

Home Care Tips

  • Measure daily water intake for your vet
  • Ensure fresh water is always available
  • Note changes in urination frequency and amount

When to See the Vet

  • Noticeably increased thirst for more than 2 days
  • Larger or more frequent urine clumps in the litter box
  • Weight loss despite good appetite
  • Lethargy or behavioral changes

Prevention Tips

  • Annual bloodwork for cats over 7
  • Regular wellness exams
  • Maintain healthy weight

Other Cat Symptoms

🤮 Vomiting🍽️ Not Eating🙈 Hiding📦 Litter Box Problems🤧 Sneezing😺 Excessive Meowing🚽 Urinating Outside Litter Box🪮 Excessive Grooming / Hair Loss⚖️ Unexplained Weight Loss😮‍💨 Bad Breath😤 Coughing💧 Drinking More Water🦿 Limping

Frequently Asked Questions

Is drinking more water in cats serious?▼
See vet within 24-48 hours. Increased water intake (polydipsia) in cats often signals kidney disease, diabetes, or hyperthyroidism — three of the most common conditions in senior cats. The seriousness depends on accompanying symptoms, duration, and your pet's overall health. This symptom warrants a vet visit within 24-48 hours.
What causes drinking more water in cats?▼
Common causes include: Chronic kidney disease, Diabetes mellitus, Hyperthyroidism. Less common but possible causes: Urinary tract infection, Medication side effects. Rare but serious causes can include: Liver disease.
When should I take my cat to the vet for drinking more water?▼
See your vet immediately if you notice: Noticeably increased thirst for more than 2 days; Larger or more frequent urine clumps in the litter box; Weight loss despite good appetite. When in doubt, a quick call to your vet can help determine urgency.
How can I prevent drinking more water in my cat?▼
Prevention strategies include: Annual bloodwork for cats over 7. Regular wellness exams. Maintain healthy weight. Regular veterinary checkups can also help catch underlying issues early before symptoms develop.

Related Cat Health Topics

☠️ Toxins Dangerous to Cat🐾 Cat Behavior Guide💊 Cat Health Conditions🍎 Safe & Toxic Foods for Cat

This is for informational purposes only and is not a substitute for professional veterinary advice. Always consult your vet.

Trusted references: Merck Veterinary Manual · AVMA Pet Health