One of the hardest things about evaluating quality of life is that an animal can still be eating even when other parts of their life are getting harder.
Appetite is important, but it’s only one piece of the picture.
Look at comfort, mobility, breathing, sleep, hygiene, interaction, and whether they can still do the things that make them feel like themselves.
A good appetite doesn’t automatically cancel out significant struggles in other areas.
If you’re starting to question your pet’s quality of life, these are important things to consider and discuss with your veterinarian.