A question answered by patterns, not moments
Almost every owner of a very old cat asks this question at 2 a.m. after one dreadful night — and one night is the worst possible evidence. Cats have isolated bad days for ordinary reasons: a hairball, a storm, a disrupted routine, a meal that disagreed with them. The honest test is the pattern across two to three weeks. Are bad days becoming the majority? Are the good days still recognisably hers — eating with interest, seeking a lap, sleeping peacefully — or have they thinned into merely less-bad days? When you can answer those from a written record rather than from guilt or hope, you are seeing her life as she is living it.
What counts as a good day for her
Define a good day in her terms, from the things she has always valued. For most senior cats that list includes eating most of her food with some enthusiasm, moving to her favourite spots without real struggle, spending time near her people by choice, resting in relaxed postures and sleeping soundly, and using the tray without distress. A good day does not mean a young cat's day; a slow, sleepy day with a cleared bowl and an evening on a lap is a genuinely good day for a frail old cat. Judge her against her own recent normal, not against how she was years ago — that comparison makes every owner despair unfairly.
What the warning pattern actually looks like
Concern grows when several shifts arrive together and stay. She leaves food she once finished, or eats only when coaxed. She withdraws to one hiding place and stops greeting people she loves. Rest looks uncomfortable — frequent repositioning, crying out when she moves or is lifted, nights that are restless rather than settled. Tray accidents multiply because getting there is too hard, or she strains and produces little. Crucially, the good intervals between these days shrink: a bad spell used to last a day and now lasts four, and the recovery afterwards is partial. One sign alone can have a treatable cause; a cluster that keeps returning despite adjustments is the pattern that matters.
Talk to your vet before you reach the edge
Do not wait until you are certain to raise this. Book a quality-of-life conversation while she still has good days to protect, and take your daily record with you. A vet who can see six weeks of marks can help you separate what might still be eased — discomfort, nausea, constipation, a tray that has become inaccessible — from a decline that care can no longer reverse. Agree together what you are watching for, what would count as the balance tipping, and what a gentle plan would look like if it does. Owners who have that conversation early almost always say afterwards that they wished they had had it sooner still.
Deciding with her whole life in view
There is no day-count that makes this decision automatic, and no owner should carry it as a maths problem alone. The record, the vet's guidance and your knowledge of what she enjoys are the three legs of a fair judgement. What you are protecting her from is a life where discomfort and fear become the default and the pleasures that defined her are gone. Reviewing that evidence together, in daylight, is far kinder than deciding in a crisis. KinsLe's Pet Passport helps by keeping your senior cat's good-and-bad-day record together with her health history in one packet, so the conversation with your vet starts from her real recent life, not from memory.