Cat Dehydration Checklist: Tick What You See

Published: October 31, 2026

Use this checklist when your cat seems off and you are not sure how worried to be. Tick what you notice, and the box at the bottom gives a general idea of how quickly to call your vet. It does not diagnose anything. For what each sign means, see the cat dehydration chart.

Look first

• Quieter or more tired than usual, or hiding
• Eating less or refusing food
• Eyes look sunken

Check by hand

• Gums dry or sticky instead of pink and wet
• Skin slow to settle after a gentle lift between the shoulder blades
• Gum colour slow to return after a light press (longer than about two seconds)

Litter box and daily habits

• Fewer or smaller urine clumps than normal
• Dark or strong-smelling urine
• Vomiting or diarrhea in the last day

Emergency signs

• Weak, wobbly or collapsed
• Pale, white or blue gums
• Straining to urinate with little or no urine

How to check the gums and skin safely

Only try these checks if your cat is calm. Gently lift the lip to look at the gums: they should be pink and wet. For the skin, lift a small fold between the shoulder blades and let go; it should settle back quickly. Cornell Feline Health Center notes that older cats may show slow skin even when they are well hydrated, so a slow result is not proof of dehydration, and a normal result does not rule it out. The chart shows the step-by-step checks.

What this checklist cannot do

It cannot tell you why your cat is unwell or how much fluid it has lost. Dehydration is often a sign of another problem, such as vomiting, diarrhea or a long-term illness, so a vet needs to look for the cause. If you are worried at any point, call your vet, even if few boxes are ticked.

What to do next

If your cat is bright, eating and has only mild signs, you can try safe ways to encourage drinking and keep watching. To see how much your cat usually needs, use the calculator.

This checklist is general information, not veterinary advice or a diagnosis.