Short answer: The most widely used tool is the HHHHHMM quality of life scale developed by veterinary oncologist Dr. Alice Villalobos. You score your dog from 0 to 10 in seven areas: Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility and More good days than bad. A total over 35 out of 70 is described as acceptable quality of life for continuing comfort care. Scoring regularly shows the trend, and your veterinarian can help you interpret it.
When a senior dog is living with a chronic illness, it can be genuinely hard for an owner to step back and assess day-to-day wellbeing objectively. A structured quality of life framework exists specifically to help with that, turning a vague sense of “how are they doing” into something more concrete.
Why Is Assessing Quality of Life So Difficult for Owners?
Owners see their dog every day, which makes gradual decline easy to miss simply because there’s no single dramatic moment to notice. Today looks a lot like yesterday, even if this month looks meaningfully different from last month. Love makes it harder still: most of us want to see the good moments. A structured framework helps by giving you specific categories to check in on regularly, rather than relying on an overall gut feeling that can be slow to catch a real trend.
The 2016 AAHA/IAAHPC End-of-Life Care Guidelines define quality of life as “the total wellbeing of an individual animal that considers the physical, social, and emotional aspects of its life.” A good checklist covers all three.
What Is the HHHHHMM Quality of Life Scale?
Dr. Villalobos first published the scale in 2004 and has since adapted it for veterinary textbooks and professional statements (Villalobos, Frontiers in Veterinary Science, 2019). Score each category from 0 to 10, where 10 means ideal or normal for your dog:
| Category | What to ask yourself | Score (0–10) |
|---|---|---|
| Hurt | Is pain well controlled? Can your dog breathe comfortably? Dr. Villalobos puts this first: “Trouble breathing outweighs all concerns.” | |
| Hunger | Is your dog eating enough? Does hand-feeding help, or is more support needed? | |
| Hydration | Is your dog drinking enough, or becoming dehydrated? Some dogs need fluids given under the skin, which your vet can teach you. | |
| Hygiene | Can your dog be kept clean, especially after urinating or defecating? Is soft bedding preventing pressure sores? | |
| Happiness | Does your dog still show joy and interest, and respond to family, toys and surroundings? | |
| Mobility | Can your dog get up without help, or does it need human or mechanical assistance? | |
| More good days than bad | When bad days outnumber good ones, quality of life may be too compromised. | |
| Total | Over 35 out of 70 is described as acceptable quality of life for continuing hospice or palliative care | /70 |
The total is a guide, not a verdict. A dog can score reasonably overall and still have one problem, such as uncontrolled pain or labored breathing, that needs attention today.
What Else Do Vets Consider?
The AAHA/IAAHPC guidelines list what a veterinary team assesses when planning end-of-life care. It’s a helpful reminder of what to watch at home:
- Organ disease and its signs, including changes in vision and hearing
- Pain: where it is, what’s causing it, how severe it is and whether it can be controlled
- Difficulty eating or drinking, and any breathing difficulty
- Problems with urination or defecation, and mobility limits
- Current mood (relaxed or anxious, content or depressed)
- Need for companionship from people and other animals
- Engagement with surroundings, and emotional and cognitive state
Two of these are easy to underestimate. Pain isn’t always obvious, so see how to tell if your dog is in pain. Confusion and night-time restlessness may be cognitive decline rather than distress, so see signs of dog dementia. Both can often be treated, which can raise a dog’s score.
How Should You Actually Use a Framework Like This?
- Score a baseline on an ordinary day, ideally writing down your observations rather than just thinking them through.
- Reassess on a regular schedule. Weekly is common for a stable chronic condition, more often if your dog seems to be declining. Score at a similar time of day each time.
- Keep a simple calendar and mark each day as good or bad. Over a few weeks, that answers the “more good days than bad” question far more reliably than memory.
- Ask another family member to score separately, then compare. Different people notice different things.
- Record short videos of things that worry you, such as difficulty rising, breathing at rest or night-time pacing. The AAHA/IAAHPC guidelines note that video helps keep your vet informed about home care.
- Look for trends rather than reacting to any single bad day. Dogs, like people, can have an off day that isn’t part of a bigger pattern.
- Bring your notes to every vet visit. Specific, tracked information gives your vet much more to work with than “he just seems a bit off lately.”
What Can Help if the Scores Are Slipping?
A falling score doesn’t automatically mean the end. It often means something needs adjusting. Palliative care aims to keep a dog as comfortable as possible, and the AAHA/IAAHPC guidelines recommend delivering it at home where possible. Useful changes include:
- Better pain control, often combining more than one medication or therapy
- Home adjustments: non-slip floors, food and water within easy reach, thick soft bedding, a comfortable room temperature and help staying clean. See home modifications for arthritic senior pets.
- Appetite and hydration support, such as a change of food, hand-feeding, appetite stimulants or fluids your vet shows you how to give
- Gentle engagement suited to what your dog can still enjoy, like short sniff walks or a wagon ride. Our enrichment ideas for senior dogs include low-effort options.
How Will I Know When It’s Time?
There’s rarely one clear moment, and no score makes the decision for you. What the guidelines do say is this. It is a vet’s duty to recommend euthanasia to relieve suffering “when palliation no longer meets the animal’s physical, social, or emotional needs.” Owners have the right to decide if, when and where it happens. Both euthanasia and a hospice-supported natural death are considered acceptable, but only if effective comfort measures are in place; letting a pet die without them is considered inhumane.
Contact your vet the same day if your dog has labored breathing at rest, pain that medication isn’t controlling, collapse, or stops eating and drinking. Many vets can talk you through what euthanasia involves in advance, including sedation beforehand and whether it can be done at home. The AAHA/IAAHPC guidelines note that many owners prefer home euthanasia because it spares the pet travel and lets more family be present. Availability varies by area, in both the US and India, so it’s worth asking early.
Looking After Yourself Too
Grief for a pet is real. The AAHA/IAAHPC guidelines note that an owner’s grief is often as intense as grief for a family member or friend. They cite studies finding that 30% of pet owners experience significant grief, and half question their decision after euthanasia. If you need to talk, the Cornell Pet Loss Support Hotline at (607) 218-7457 is staffed by trained veterinary student volunteers. It runs weekday evenings and weekend afternoons and evenings, US Eastern time. Your own vet can also suggest local grief-support services.
A quality of life framework isn’t a replacement for your vet’s clinical assessment. It’s a way to bring clear, structured information into that conversation, and it can make difficult conversations about your dog’s care and comfort more grounded and collaborative.
This article is for informational purposes only and does not replace guidance from your veterinarian.
Sources
- Villalobos AE, Frontiers in Veterinary Science — Supportive care for people with disabilities as working partnerships with their assistance dogs are ending: a perspective from veterinary oncology (includes the HHHHHMM Quality of Life Scale), 2019
- Villalobos AE, Veterinary Clinics of North America: Small Animal Practice — Quality-of-life assessment techniques for veterinarians, 2011
- Bishop G et al., Journal of the American Animal Hospital Association — 2016 AAHA/IAAHPC End-of-Life Care Guidelines, November/December 2016
- Cornell University College of Veterinary Medicine — Pet Loss Support Hotline
