Complete Cat Health Checklist: What to Monitor Every Month

Cats are masters at hiding illness — it’s an evolutionary survival instinct that makes them challenging to read. A simple monthly check at home helps you notice subtle changes before they become serious problems. Here’s your complete monthly cat health checklist.

Eyes, Ears, and Nose

Healthy cat eyes are clear, bright, and free of discharge. The third eyelid (a pale membrane at the inner corner) should not be visible — if it is, it often signals illness or stress. Ears should be clean and light pink inside, with no dark waxy buildup, odor, or head-shaking. The nose can be slightly damp or dry depending on the cat, but any persistent discharge warrants attention.

Teeth and Gums

Gently lift your cat’s lips and look at their teeth and gums. Gums should be pink and moist. Pale, white, yellow, or bluish gums indicate a medical emergency. Teeth should be reasonably white — heavy brown tartar is common but manageable with dental care. Persistent bad breath beyond mild odor deserves a vet check.

Coat and Skin

Run your hands along your cat’s entire body. The coat should be glossy and smooth with no matting, bald patches, or excessive shedding. Skin underneath should be clean with no flaking, redness, or parasites. Cats groom themselves constantly — over-grooming (resulting in bald patches) can signal allergies, parasites, or anxiety.

Weight and Body Condition

You should be able to feel your cat’s ribs with light pressure but not see them. Weigh your cat monthly — many pet scales allow you to weigh yourself holding the cat and subtract your weight. A loss of even half a pound in a small cat can be significant. Unexplained weight loss in cats is one of the most important warning signs to take seriously.

Litter Box Habits

The litter box tells you a lot. Scoop daily so you notice changes: how much urine, how often, any straining, blood, loose stools, or unusually foul odor. Male cats especially can develop urinary blockages — a life-threatening emergency. If a male cat is straining to urinate and producing little or nothing, seek emergency care immediately.

Behavior and Energy

You know your cat’s normal. Changes in behavior — hiding more than usual, decreased playfulness, increased vocalization, or reduced affection — often precede physical symptoms. Trust your gut. A cat that “just doesn’t seem right” often isn’t.

When to See a Vet

Any changes in eating or drinking, litter box habits, breathing, weight, or energy that persist for more than 24–48 hours deserve a vet call. Cats deteriorate faster than dogs when something is wrong — early intervention almost always leads to better outcomes and lower treatment costs.

Monthly health checks take just five minutes and keep you closely attuned to your cat’s wellbeing. The more familiar you are with your cat’s healthy normal, the faster you’ll notice when something is off — and that speed can make all the difference.