Cat Quality of Life Scale: Scoring the Seven Things Vets Look At

There is no test that tells you it is time. What there is instead is a way of breaking the question into parts small enough to answer honestly, one at a time.

The scale below is the HHHHHMM scale, developed by Dr Alice Villalobos, a veterinary oncologist. Vets use it with families making this decision. It scores seven things from 0 to 10, and the total gives you something steadier than a feeling you keep second-guessing.

It matters more with cats than with dogs, because cats mask illness. A cat in pain withdraws, hides, sleeps more and stops grooming rather than complaining, which is easy to read as getting older. Scoring the same seven things repeatedly makes a gradual slide visible in a way that living alongside it does not.

What the number cannot tell you

The scale does not know whether you can afford another month of medication, or give fluids at home, or take the time off work. Those are real inputs and no assessment includes them.

It also cannot see what is coming. Chronic kidney disease is the condition most often behind this question in cats, and it declines in steps rather than smoothly — a cat can hold steady for months and then drop. Lymphoma, congestive heart failure and liver disease each have their own shape. That is what your vet adds to the number.

Signs that mean today, not this week

Call a vet now, whatever the score says:

• • Open-mouth breathing or panting. Cats do not pant the way dogs do. In a cat this is an emergency, not a hot day.
• • Straining in the litter tray with nothing produced — a possible urinary blockage, which is fatal within a day or two and most common in male cats
• • Collapse, or an inability to stand
• • Crying, or hiding somewhere they have never hidden before
• • Pale or white gums
• • Not eating for more than 24 hours — cats can develop hepatic lipidosis within a few days of going without food, which is its own emergency on top of whatever caused it

That last one is the difference between cats and dogs that catches people out. A dog that skips meals for a day is usually fine. A cat that stops eating is starting a second, separate problem.

Where bloodwork fits

Some of the scale is visible from across the room. Some of it is not, and in cats rather less of it is.

Kidney values, weight trend and appetite markers put a number on the slope your cat is on — the thing the scale cannot see. If panels have been run over the last year, the trend across them tells you more than any single result. Kidney values, creatinine and senior screening panels are usually where a decline shows first — often before you can see it. Steady weight loss is the other early signal, and it is easy to miss in a long-haired cat.

Talking to your vet

Bring the seven scores and the dates you took them. Then ask directly:

• • What is the realistic trajectory over the next month?
• • What are we still treating, and what are we only managing?
• • Is any of this pain we are not seeing, given how well cats hide it?
• • If this were your cat, what would you be weighing?

Most vets will answer that last one honestly if you ask it plainly. It is often the most useful thing in the conversation.

If you are working through this for a dog as well, the dog version of this scale uses the same seven criteria with the mobility and grooming questions adjusted.