Have you noticed your cat drinking more water than usual and meowing excessively? While occasional thirst or vocalization is normal, a sudden increase in both could be a red flag for underlying health issues. Cats are naturally subtle when it comes to showing signs of illness, so these behavioral changes shouldn’t be ignored.
In this article, we’ll explore why your cat may be drinking a lot of water and meowing excessively. From medical conditions like diabetes and kidney disease to stress and behavioral factors, understanding the root cause can help you take the right steps for your feline friend’s health.
Contents
What Is Considered Excessive Water Drinking in Cats?
Cats are known for their low thirst drive, primarily getting moisture from their food. However, an increase in water consumption (polydipsia) can signal health concerns.
How Much Water Does a Cat Normally Drink?
The average cat drinks 50-70 ml of water per kilogram of body weight daily. This means a 4 kg (8.8 lb) cat should consume around 200-280 ml of water per day. Factors that influence normal hydration include:
- Diet – Cats on dry food typically drink more water than those on wet food.
- Activity Level – Active cats may require more hydration.
- Climate & Season – Hotter temperatures increase water intake.
- Age & Size – Older cats or larger breeds might drink more.
When Is It Considered Excessive?
If your cat is suddenly drinking double or triple their usual amount, frequently visiting the water bowl, or showing signs of dehydration despite drinking more, it’s time to investigate. Keep an eye on additional symptoms such as weight loss, changes in appetite, and increased urination.
| Weight (kg/lbs) | Normal Daily Water Intake (ml) | Excessive Intake (ml) |
| 2 kg (4.4 lbs) | 100-140 ml | Over 280 ml |
| 4 kg (8.8 lbs) | 200-280 ml | Over 500 ml |
| 6 kg (13.2 lbs) | 300-420 ml | Over 700 ml |
Why Is My Cat Meowing More Than Usual?
Meowing is a cat’s primary way of communicating with humans. While some breeds, like Siamese, are naturally more vocal, excessive meowing can indicate distress, discomfort, or medical issues.
Types of Meows and What They Mean
- Short, soft meows – Seeking attention or affection.
- Loud, prolonged meows – Sign of pain, hunger, or discomfort.
- Howling or yowling – Can indicate cognitive dysfunction, mating behavior, or illness.
- Chirping or chattering – Often seen when watching birds or prey.
- Persistent nighttime meowing – May indicate anxiety, loneliness, or medical problems.
Possible Reasons for Increased Meowing
- Pain or discomfort – Cats vocalize when they’re in distress.
- Hunger or thirst – If paired with excessive drinking, it could signal a medical issue.
- Attention-seeking behavior – Some cats meow when they want interaction.
- Stress or anxiety – Changes in the environment, such as a new pet or a move, can cause vocalization.
- Cognitive dysfunction – Older cats with feline dementia may meow more frequently, especially at night.
If your cat’s meowing has suddenly intensified along with increased water intake, medical attention is necessary.
Common Medical Causes of Increased Thirst (Polydipsia) in Cats
If your cat is drinking a lot of water and meowing excessively, several underlying medical conditions could be responsible.
1. Diabetes Mellitus
Diabetes in cats occurs when the body either doesn’t produce enough insulin or becomes resistant to it, leading to high blood sugar levels.
Symptoms of Diabetes in Cats
- Increased thirst (polydipsia)
- Frequent urination (polyuria)
- Increased appetite (polyphagia)
- Weight loss despite eating more
- Lethargy and weak hind legs (diabetic neuropathy)
Diagnosis & Treatment
A veterinarian will perform blood tests and urine analysis to diagnose diabetes. Treatment includes insulin therapy, dietary changes, and monitoring glucose levels.
2. Chronic Kidney Disease (CKD)
Kidney disease is common in older cats and leads to excessive water consumption as the kidneys struggle to filter waste properly.
Symptoms of CKD
- Increased water intake and urination
- Weight loss
- Poor coat condition
- Bad breath (uremic breath)
- Vomiting and lethargy
Diagnosis & Management
A vet will check blood creatinine, BUN (Blood Urea Nitrogen), and SDMA levels to assess kidney function. Treatment includes a kidney-friendly diet, hydration support, and medication to manage symptoms.
3. Hyperthyroidism
An overactive thyroid increases metabolism, causing excessive thirst, hunger, and hyperactivity.
Symptoms of Hyperthyroidism
- Weight loss despite increased appetite
- Excessive drinking and urination
- Hyperactivity and restlessness
- Vomiting or diarrhea
- Rapid heart rate
Diagnosis & Treatment
A simple T4 blood test can confirm hyperthyroidism. Treatment options include medication (methimazole), radioactive iodine therapy, or surgery.
4. Urinary Tract Infections (UTIs) & Kidney Infections
UTIs and kidney infections cause discomfort, increased water intake, and frequent urination.
Signs of UTIs or Kidney Infections
- Straining to urinate
- Blood in urine
- Increased drinking
- Meowing in pain while urinating
A urinalysis and culture test will confirm the infection. Antibiotics and increased hydration are common treatments.
5. Cushing’s Disease (Hyperadrenocorticism)
Though rare, Cushing’s disease (excess cortisol production) can cause excessive thirst, urination, and vocalization.
Stress and Anxiety as a Cause of Increased Meowing and Drinking
Cats are sensitive creatures, and stress can manifest in unusual ways, including excessive drinking and vocalization.
Common Stress Triggers
- Moving to a new home
- Introduction of a new pet or baby
- Loud noises (fireworks, construction)
- Changes in routine
How to Reduce Stress in Cats
- Provide a safe space – A quiet, comfortable area for retreat.
- Use pheromone diffusers – Products like Feliway help calm anxious cats.
- Stick to a routine – Consistency in feeding and playtime reduces stress.
Behavioral Causes of Excessive Drinking and Meowing
1. Attention-Seeking Behavior
Some cats learn that meowing gets them what they want—food, water, or attention.
2. Boredom & Lack of Stimulation
Indoor cats may meow excessively due to boredom. Providing toys, interactive feeders, and window perches can help.
3. Cognitive Dysfunction (Feline Dementia)
Older cats may develop cognitive decline, leading to confusion, excessive meowing (especially at night), and altered drinking habits.
When to Be Concerned – Signs to Watch For
If your cat is drinking a lot of water and meowing excessively, look for these additional warning signs:
| Symptom | Possible Cause |
| Increased thirst | Diabetes, kidney disease, hyperthyroidism |
| Frequent urination | Diabetes, UTI, kidney disease |
| Weight loss | Diabetes, hyperthyroidism, kidney disease |
| Vomiting | Kidney disease, hyperthyroidism, stress |
| Loud, excessive meowing | Cognitive dysfunction, anxiety, pain |
🚨 See a vet immediately if your cat shows sudden behavioral changes or multiple symptoms.
How to Monitor and Track Your Cat’s Water Intake
Keeping track of water intake is crucial for early detection of health issues.
Tips for Monitoring Hydration
✔️ Use a measuring cup to track daily water intake.
✔️ Note litter box habits – more urine clumps can indicate a problem.
✔️ Observe coat and skin elasticity – dehydration can cause dry skin.
Tip: If your cat prefers running water, consider a cat water fountain to encourage drinking without excessive intake.
What to Do if Your Cat Is Drinking Excessively and Meowing Too Much
Step 1: Observe and Record Changes
Write down any unusual behaviors, including changes in appetite, energy levels, and urination.
Step 2: Schedule a Vet Visit
A vet may perform:
- Blood tests – To check for diabetes, kidney disease, and hyperthyroidism.
- Urinalysis – To detect infections or kidney problems.
- Imaging (X-ray/Ultrasound) – If needed for further investigation.
Step 3: Follow the Recommended Treatment Plan
Depending on the diagnosis, treatment may involve:
- Insulin for diabetes
- Special kidney diet for CKD
- Thyroid medication for hyperthyroidism
- Antibiotics for UTIs
Preventing Future Health Issues Related to Water Intake
Ways to Keep Your Cat Healthy
🐾 Feed a high-quality, balanced diet – Wet food can improve hydration.
🐾 Provide fresh water daily – Filtered water may encourage drinking.
🐾 Schedule regular vet checkups – Early detection saves lives.
🐾 Reduce stressors in the home – A calm cat is a healthy cat.
FAQs About Cats Drinking a Lot of Water and Meowing
1. Why is my cat suddenly drinking a lot of water?
A sudden increase in water consumption (polydipsia) can be a sign of diabetes, kidney disease, hyperthyroidism, or a urinary tract infection. It can also be due to increased activity, dietary changes, or warmer weather. If excessive thirst continues for more than a few days, consult a veterinarian.
2. How do I know if my cat is drinking too much water?
Normal water intake for a cat is 50-70 ml per kg of body weight per day. If your cat starts drinking significantly more than this amount, refills their water bowl more often, or shows other symptoms like weight loss or frequent urination, it may be excessive.
3. Why is my cat meowing excessively?
Excessive meowing can indicate pain, hunger, stress, anxiety, or medical conditions like hyperthyroidism, kidney disease, or cognitive dysfunction in older cats. Some cats also meow more when seeking attention or if they are bored.
4. Can stress cause my cat to drink more water and meow excessively?
Yes, stress can cause behavioral changes, including increased drinking and vocalization. Common stressors include a new pet, moving to a new home, loud noises, or changes in routine. Providing a calm environment, interactive toys, and pheromone diffusers can help reduce stress-related behaviors.
5. How can I tell if my cat’s excessive drinking and meowing are serious?
If your cat is drinking more water than usual, vocalizing excessively, and also showing symptoms like:
- Weight loss
- Lethargy
- Vomiting or diarrhea
- Frequent urination
- Poor coat condition
it’s time to visit a vet. These could indicate a serious medical condition that requires immediate attention.
6. What should I do if my cat is drinking a lot of water and meowing excessively at night?
If your cat suddenly becomes restless and meows more at night while drinking more water, possible reasons include:
- Hyperthyroidism (causes restlessness and excessive thirst).
- Cognitive dysfunction (feline dementia) in older cats.
- Anxiety or loneliness, especially if their routine has changed.
A vet checkup can help determine the cause, and environmental adjustments like interactive toys, scheduled playtime, or calming supplements may help.
7. Can a change in diet cause my cat to drink more water?
Yes, switching from wet food to dry food can naturally increase water intake, as dry food contains less moisture. Also, some prescription diets (such as those for urinary health) encourage increased water consumption. However, if drinking becomes excessive, a vet visit is advisable.
8. What tests will a vet perform if my cat is drinking too much water?
A veterinarian may conduct the following tests:
- Blood tests (to check for diabetes, kidney disease, and hyperthyroidism).
- Urinalysis (to detect infections, glucose levels, and kidney function).
- Ultrasound or X-rays (if kidney disease or tumors are suspected).
9. Is excessive water drinking in cats ever normal?
While some cats naturally drink more than others, a sudden and significant increase is not normal and should be investigated. If your cat is still active, eating well, and showing no other symptoms, monitor them closely. If changes persist, consult a vet.
10. How can I prevent excessive thirst and meowing in my cat?
To keep your cat healthy and prevent potential issues:
✅ Feed a high-quality diet – Wet food can help maintain proper hydration.
✅ Provide fresh water daily – Consider a water fountain to encourage drinking.
✅ Maintain routine vet checkups – Early detection of health issues is crucial.
✅ Reduce stress – Keep your cat’s environment stable and engaging.
✅ Monitor behavior changes – Sudden shifts in drinking and vocalization should not be ignored.
Conclusion
A cat drinking a lot of water and meowing excessively is not just a quirky behavior—it can indicate serious underlying health problems. Diabetes, kidney disease, hyperthyroidism, and stress are among the top causes.
📌 Key Takeaways:
✅ Monitor your cat’s water intake, urination, and weight.
✅ Look for additional symptoms that could signal illness.
✅ If behavior changes persist, consult a vet immediately.
Caring for your cat’s health means staying alert to changes and acting promptly. Your furry friend depends on you to keep them happy and healthy! 🐾
