The HHHHHMM Scale: What a Vet Sees When You Walk In With a Number
A plain-language walk through the veterinary quality-of-life framework Ralph is built on — and the limit a number can't reach.
When Ralph was diagnosed with lymphoma, I went looking for a way to keep my head while my heart was breaking. I didn’t know it at the time, but the thing I found — a scoring framework that veterinarians use to measure quality of life in palliative care — would become the spine of the app I ended up building.
It is called the HHHHHMM Scale. Five H’s, two M’s. Not a typo. It was developed by Dr. Alice Villalobos, a veterinary oncologist, and it has been the most widely cited quality-of-life framework in veterinary medicine for two decades. Dr. Villalobos published it in her book Canine and Feline Geriatric Oncology: Honoring the Human-Animal Bond (Wiley-Blackwell), and later revised it for the International Veterinary Association of Pain Management. If you have ever seen a vet quietly write seven numbers on a notepad during a hospice conversation, this is what they were filling in.
The reason I’m writing this post is simple: people using Ralph ask, in some form, almost every month — is the score right? Am I scoring the same way my vet would? What does a 6 actually mean? The framework deserves a longer answer than a tooltip can give.
What the seven letters measure
The scale scores seven factors, each from 0 (worst) to 10 (best). The total runs from 0 to 70.
Hurt. Is the pain managed? This is the one veterinarians tend to look at first, because uncontrolled pain distorts every other score. A pet who hurts can’t eat comfortably, can’t rest comfortably, can’t move comfortably, and won’t show happiness. Pain assessment in animals is harder than in people because they cannot tell us. Look for the indirect signs: panting at rest, reluctance to settle, shifting positions, a guarded posture, hiding.
Hunger. Is the pet eating enough, and willingly? Not just finishing a bowl — actually wanting food. A pet who eats only when hand-fed, or only with coaxing, is in a different place than one who walks to the bowl.
Hydration. Drinking enough to stay hydrated. A quick check: gently lift the skin between the shoulder blades. If it snaps back, hydration is fine. If it stays tented, call the vet.
Hygiene. Can the pet stay clean? Continence, grooming, skin condition, pressure points. This factor often catches people off guard, because a senior pet who used to be immaculate can quietly stop being able to groom the hindquarters. It is a comfort issue before it is a dignity issue.
Happiness. Does the pet still respond to the things they once loved — your voice, a favorite person, food, a toy, a sunbeam? This is the most subjective factor on the scale. There is no objective test for whether your dog is still enjoying life. The framework trusts your read of your own animal.
Mobility. Can the pet move with reasonable comfort? Not athletic ability — the ability to reposition, to get to food and water, to relieve themselves without distress. A 13-year-old Lab who needs help on the stairs is in a different place from a 13-year-old Lab who can’t get up at all.
More good days than bad. A judgment about the week as a whole, not the moment. The framework asks you to step back from the bad day you are living in right now and ask whether, over the past seven days, the good ones still outnumber the bad ones.
What the total actually means
The numbers are a language, not a verdict. Dr. Villalobos’s published guidance treats the scale as a starting point for a conversation, not as a decision rule on its own.
A total above 35 is generally treated as acceptable — continue current care, re-score weekly, and after any meaningful change.
A total that drops into the 30–34 range is a signal worth a conversation: a vet visit to revisit pain management, diet, mobility support, environmental adjustments.
A total that stays below 30 for a week or more is the range where, in Dr. Villalobos’s published framework, families and veterinarians commonly begin discussions about hospice care and end-of-life planning.
The framework also asks you to watch for any single factor that collapses, even if the total still looks acceptable. A 0 or 1 on Hurt or Hunger is a more urgent signal than a low score on Mobility. The number you write down matters less than the conversation the number starts.
What the framework cannot do
The HHHHHMM Scale does not know your pet. It does not know that your cat has always been aloof and that a 7 on Happiness from her genuinely looks like indifference. It does not know that your dog has never been food-motivated and that a 6 on Hunger is actually fine for him. It does not know what your pet looked like a year ago, only what you can remember today, and memory is the most unreliable instrument in the whole toolkit.
This is the part where the framework stops being clinical and becomes human. The number is the language you bring to the vet. The vet brings clinical judgment. Your family brings the daily knowledge of this specific animal. The decision, when it comes, is made by all three — not by the spreadsheet.
Why Ralph is built on it
When I built the first version of the app, I made the HHHHHMM Scale the core because it was the only thing I’d found that gave me a way to keep score of the unscoreable — a way to know, on a bad day, whether today was a bad day or I was having one. Everything else in the Pet Wellbeing Hub — the lump tracker, the weight log, the symptom notes, the medicine reminders — sits on top of that same idea: externalize the observation, share the language, leave the decision where it belongs.
A few small things changed in the app, for practical reasons. The original scale asks you to score each factor on a 0–10 line; Ralph uses a five-step rating instead — easier to answer on a tired evening, and the score behind it is still 0 to 10. The last M — More good days than bad — is dropped, because that factor was written for a defined window of observation, and the app is meant to be used continuously, week after week. The practical upshot: the midpoint of the Ralph scale is 30, not 35, because Ralph scores six factors, not seven. The framework is the same. The numbers shifted to fit how the app is actually used.
If you bring a week’s worth of HHHHHMM scores into a vet visit, you are walking in with something a clinician can use. If you walk in with a feeling, you are walking in with a feeling. Both are valid. One is a better start.
Quality of life is measured in moments, not days. The scale is here to help you notice those moments while they are still happening — and to make the conversation about them a little less hard than it would have been without it.
Want a printable one-page HHHHHMM chart to bring to your next vet visit? The original is published by Dr. Alice Villalobos and widely available; get in touch if you’d like us to point you to the version we recommend, or to share your own scoring questions.