How this instrument works
Cats mask illness and pain more thoroughly than dogs do — it's an instinct left over from being both predator and prey, where looking vulnerable is a liability. That makes a purely visual, one-glance read of "how is my cat doing" unreliable for a cat in decline. The Villalobos HHHHHMM scale, developed by veterinary oncologist Dr. Alice Villalobos for hospice and palliative patients, sidesteps that by breaking the assessment into seven specific categories — Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and More good days than bad — each scored 0 to 10.
The seven numbers are added for a total out of 70. Hurt asks about pain control and breathing comfort. Hunger and Hydration track whether your cat is eating and drinking on her own or needs assisted feeding or fluids — a cat that stops approaching the food bowl is often the first sign something is wrong. Hygiene matters more for cats than it might seem, since a cat too unwell to groom herself is telling you something directly; matted fur or a dirty litter box area is a real data point, not just a cleanliness issue. Happiness looks for interest in her surroundings rather than withdrawal, and Mobility checks whether she can jump, climb, and posture normally. More good days than bad is a running tally across recent weeks.
The published line is a total over 35 out of 70 — strictly above it, not equal to it — for acceptable quality of life to continue hospice or palliative care. Because cats are so good at concealing decline, Villalobos designed the scale to be re-run on a regular schedule rather than trusted as a single read. Use it as a structured way to compare this week to last, and as a shared reference point with your veterinarian — not as a stand-alone verdict.
- Score Hurt — how well pain and breathing are being managed right now, 0 to 10.
- Score Hunger and Hydration — whether she eats and drinks on her own, unassisted.
- Score Hygiene, Happiness, and Mobility — self-grooming, engagement, and independent movement.
- Score More good days than bad — your honest read on the last week or two, not just today.
- Read the total out of 70 and whether it clears the strict 35-point line for continuing care.
- Re-score on a fixed schedule, since cats rarely announce decline the way dogs do.
Worked example — Nutmeg, a 15-year-old cat with kidney disease
Nutmeg is 15, on palliative care for chronic kidney disease, and her owner scores her every Friday evening. This week: Hurt 7, Hunger 7, Hydration 7, Hygiene 7, Happiness 7, Mobility 7, More good days than bad 7 — a steady, solidly comfortable week across the board. Add the seven sevens: 7+7+7+7+7+7+7 = 49. Since 49 is greater than 35, the scale reads acceptable, and her current plan of subcutaneous fluids twice weekly is judged to be working.
A different cat on the same scale shows why the categories rarely move together. Say a cat is pain-free and eating well but has poor mobility and lets her grooming slip: Hurt 10, Hunger 2, Hydration 8, Hygiene 3, Happiness 9, Mobility 1, More good days than bad 4. Add them exactly as scored: 10+2+8+3+9+1+4 = 37. Even with two very low scores dragging the average down, the total of 37 still clears 35 — a reminder that this scale sums unevenly distributed strengths and weaknesses rather than requiring every category to individually look good.
Questions
My cat is hiding more than usual — does that hurt her Happiness score?
Often yes, but check Hurt and Mobility first. Increased hiding in a cat with a known illness is frequently a pain or discomfort signal rather than a mood change, since cats retreat when they feel vulnerable. Score Happiness on genuine disengagement from things she used to enjoy — food, attention, a favorite window — rather than on hiding alone, and treat a sudden increase in hiding as a prompt to reassess Hurt specifically.
Why does this scale matter more for cats than for dogs?
Cats evolved as both predator and small prey animal, and hiding weakness is a survival instinct that persists even in a safe home — a sick cat often looks nearly normal until she's quite unwell. A single visual check-in is easy to misread as a result. Breaking the assessment into seven specific, repeatable categories catches gradual decline in eating, grooming, or mobility that a general impression of "she seems fine" would miss entirely.
What does a total score under 35 mean for my cat?
It means her seven scored categories, added together, no longer clear the published line for acceptable quality of life on hospice or palliative care. It isn't an automatic signal to euthanize — it's meant to prompt a specific conversation with your veterinarian about pain management, feeding support, or hydration, since a low score is often addressable with an adjusted treatment plan. Bring the trend, not just one score, to that conversation.
How is Hygiene scored for a cat that grooms herself?
Score it on how well she's managing that grooming, not on whether the house looks tidy. A healthy cat keeps her coat smooth through constant self-grooming; a cat in decline lets it go matted or greasy, particularly around the hindquarters if arthritis or nausea makes reaching harder. That visible change is itself useful data, separate from litter box hygiene, which weighs more into the Hurt and Hydration categories.
Do I need to separate indoor and outdoor cats when scoring Mobility?
No — score against what's normal for that individual cat, indoor or outdoor. An indoor cat's baseline might be jumping to a windowsill and using the litter box without hesitation; an outdoor cat's might include navigating a cat door or a fence line. The scale asks whether she can still do her own normal movements comfortably, not how her routine compares to a different cat's.
Who created this scale, and does it apply the same way to cats as dogs?
Veterinary oncologist Dr. Alice Villalobos developed it, published in her textbook Canine and Feline Geriatric Oncology with Laurie Kaplan. The seven categories, the 0–10 scoring, and the over-35 threshold are identical across species — the scale was built for both from the start. What differs in practice is how each category is read: signs like self-grooming and hiding behavior carry more diagnostic weight in cats than they do in dogs.