Look for a change from normal
Some cats naturally drink more than others, and diet can affect visible drinking. What matters most is a noticeable change for your individual cat, especially when it persists or appears with changes in appetite, weight, urination or behaviour.
Make your observation useful
- Keep water freely available; do not restrict it.
- Note how often bowls need refilling and whether litter clumps are larger or more frequent.
- Record food type, appetite and any weight change.
- Share the pattern with your veterinarian rather than trying to diagnose the cause yourself.
Make water easy to use
Clean bowls in several quiet locations can help. A fountain is optional, not a treatment. See our hydration guide for practical setup ideas.
Contact a veterinarian promptly for sudden, severe, persistent or worsening changes. Breathing difficulty, collapse, repeated straining to urinate, seizures or suspected poisoning can be emergencies. Online guidance cannot diagnose your cat.
Source and review note
This page uses Cornell Feline Health Center as a reference starting point. External organisations do not endorse this site.