Quality of life conversations go better when they start before a crisis forces them. Your vet sees your dog in short appointments, often on a good or a stressed day that says little about her ordinary weeks. You see the ordinary weeks. The most useful thing you can bring to this discussion is not a conclusion but evidence: what her days actually look like now, and how they have changed.
Bring Observations and a Good-Days Record
Keep a simple good-days record for a few weeks before the appointment. Each evening, note how the day went across the areas that matter: comfort, appetite, mobility and interest. Was she settled and able to rest, or restless and unable to get comfortable? Did she eat with enthusiasm, pick at her food, or skip a meal? Could she manage her usual walk, the stairs or getting into the car, and how did she recover afterwards? Did she seek out family life, greet people, show interest in a toy or the garden, or withdraw to sleep alone?
Bring that record with you, along with specifics your memory would blur: how often she has needed help rising, any night that was badly disturbed, any day she could not do something she managed a month earlier. Photographs and short videos of her moving at home can show the vet things a consulting room floor never will.
What to Ask, and How Decisions Get Made
Ask the vet what they are seeing clinically that you may not: weight trends, pain signs dogs hide well, changes in the heart, kidneys or joints that examinations and tests can reveal. Ask what can still be improved, because discomfort, nausea, stiffness and anxiety in old dogs often have room for improvement even when the underlying age cannot be reversed, and your vet should lead those treatment decisions. Ask what decline would look like with her conditions, so you know which changes are expected, which are worrying, and which should trigger a call between appointments.
Discuss the framework honestly. There is no threshold in this conversation, no verdict score and no proprietary scale that decides for you. The trend in your record, the family conversation about what she still enjoys and what she now endures, and your vet's input guide decisions together. Talking early also lets you discuss practical end-of-life options calmly, including what the vet can offer and what you would want, so nothing important is first raised on the hardest day.
Between Appointments, Keep Watching the Trend
After the visit, keep the record going rather than filing it away. A single grim day after a journey or a celebration is weather; a steady run of harder days across comfort, appetite, mobility and interest is climate, and that trend is what your next conversation needs. Note the small wins too, because a dog who still trots to the gate for one favourite person is telling you something real about her remaining pleasures.
Between visits, keep adding your dated notes and good-days record to the packet KinsLe calls Pet Passport, so the next conversation starts from evidence rather than recollection.