My Cat Is Drinking More Water. Should I Be Worried?
A cat visiting the water bowl more frequently may not seem particularly alarming.
But when an older cat suddenly begins drinking noticeably more—or you’re filling the bowl more often—it’s worth paying attention.
Increased thirst and urination can occur with several medical conditions, including chronic kidney disease, diabetes mellitus and hyperthyroidism.
Why kidney disease deserves particular attention?
Chronic kidney disease is especially important in older cats.
Cornell’s Feline Health Center reports CKD in up to 40% of cats over 10 years old and up to 80% of cats over 15.
Healthy kidneys concentrate urine and conserve water. As kidney function declines, cats may produce larger amounts of dilute urine and compensate by drinking more.
Other signs can eventually include:
- Weight loss
- Reduced appetite
- Lethargy
- Poor coat condition
- Vomiting
- Increased urination
Importantly, cats with early CKD may show no obvious signs at all.
What can owners do?
First: never restrict your cat’s water because they are drinking too much.
Instead, observe.
Notice how frequently the bowl needs refilling, whether urine clumps in the litter tray are becoming larger and whether your cat’s appetite, weight or behaviour has changed.
If possible, weigh your cat regularly. Gradual weight loss is much easier to recognise on a scale than by looking at a fluffy cat every day.
When should your cat be checked?
A persistent increase in thirst or urination deserves veterinary assessment, particularly in a middle-aged or senior cat.
Blood tests, urinalysis and blood-pressure measurement can provide important information, and no single kidney test gives the complete picture.
What We Often See in Practice?
Owners sometimes worry that they are “overreacting” because their cat still looks perfectly well.
Those small observations are actually valuable.
Cats are remarkably good at compensating for disease, so a subtle change in drinking, appetite or weight can sometimes be the first clue.
One Thing Every Pet Owner Should Remember
Your cat’s water bowl can tell you something about their health. Pay attention when the pattern changes.