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How do you know when it's time? The quality-of-life scale vets use

The hardest question in pet ownership, and the one people are most afraid to search. There is a way to think about it that is kinder than guessing — the scale vets use, the questions behind it, and what actually happens on the day.

4 min read
An old black-and-tan dog with a white muzzle lying on the grass, resting.

Nobody wants to read this article, and almost everyone who has an old or ill animal eventually does, usually late at night. So it is written plainly, and it does not pretend the answer is easy. It is not. But there is a way to think about it that is fairer to the animal than hoping, and kinder to you than guessing.

The two mistakes people make

The first is waiting for the animal to "tell you". Dogs and cats hide pain and illness as a matter of instinct; they will eat, wag and purr on a bad day because that is what they do. Waiting for a clear sign usually means waiting past the point where the animal was still comfortable.

The second is deciding on one bad day. Every old animal has a terrible night and a good morning after it. A decision made in the bad night is made in fear; a decision made from a pattern is made with love.

The scale is a way to see the pattern.

The scale vets use

It is usually called the HHHHHMM scale, from the vet who wrote it, Dr Alice Villalobos. Seven questions, each scored from 0 to 10, where 10 is "as good as a healthy animal":

  1. Hurt. Is pain controlled? Can they breathe easily? A score below 5 here is the most important number on the page, and pain that medication no longer controls is, by itself, a reason.
  2. Hunger. Are they eating enough, willingly, without being hand-fed every meal?
  3. Hydration. Drinking enough on their own?
  4. Hygiene. Can they keep themselves clean, or are they lying in their own mess and getting sores?
  5. Happiness. Do they still respond to you, the family, the things they loved — the walk, the window, the lap? Or are they withdrawn, anxious, somewhere else?
  6. Mobility. Can they get up, get to water, get outside, without help or with help they accept?
  7. More good days than bad. Over the last week — honestly — which won?

Add the scores. Above 35 of 70, most vets would say there is still a good life to support, and it is worth treating what can be treated. Below 35, or with any single line stuck near zero, it is time to have the conversation.

Do it on paper, once a week, for a few weeks. The number matters less than the direction. A 50 that becomes a 42 and then a 36 is telling you something no single day could.

The three questions behind the scale

If seven lines are too many, most vets come down to three:

  • Can they still do the things that made them themselves? The specific things — not "walk", but the particular way this dog checked every lamp post; not "eat", but the way this cat shouted for breakfast.
  • Is the pain controlled, and for how much longer? Ask the vet this directly. They know the trajectory of the condition and they will tell you honestly if asked honestly.
  • Am I keeping them for them, or for me? The hardest one. There is no shame in the second answer — it is love — but it is not a reason to continue.

A rule many vets offer, and it holds: a week too early is better than a day too late. Nobody has ever regretted sparing an animal the last bad days. Many people carry the memory of not doing so.

What actually happens

Knowing this in advance takes some of the fear out of it.

Most vets will come to the house if you ask; if not, ask for the quietest time of day at the clinic and for the room to be ready so there is no waiting. You can be there — most people are, and most are glad they were. You do not have to be, and the animal does not know the difference; the vet and nurse will hold them and speak to them.

The vet gives a sedative first, an injection under the skin or into a muscle. Over five to ten minutes the animal becomes deeply relaxed and then asleep; this is the part where you can hold them and talk to them. Then, once they are fully unconscious, the second injection, into a vein. It is an overdose of anaesthetic. The heart stops within a minute, usually within seconds. They feel nothing after the sedative. Afterwards there may be a breath or a twitch, and the eyes usually stay open; the vet will tell you this beforehand so it does not frighten you.

Ask in advance what you want to happen afterwards — burial at home where that is allowed, individual cremation with the ashes returned, or communal cremation — so nobody has to decide it in the room.

Afterwards

Grief for an animal is real grief and it is not smaller for being about an animal. Take the day. Tell the people who will understand; do not tell the ones who will not.

Two practical things, because they are the ones that ambush people. Ring the microchip registry and the insurer, and cancel the food subscription, in the first week — the reminder emails are cruel. And watch the other pets: they know something has changed, and some grieve visibly for weeks. Keep their routine exactly as it was.

If you kept a record, do not delete it. In mypet care a pet's page stays as it was unless you remove it — the weights, the visits, the photos — and people find, months later, that they are glad it is there.


If you are reading this tonight with an animal beside you: ring the vet in the morning and ask the pain question directly. That is the whole first step, and it is enough for today.

While you’re here

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