This is a very difficult question, and different for each person and family. I have no dependants, and am moderately fit and able, (therefore able to take any work on, including manual work) so it was different for me. But to save Misty I would have given absolutely everything I owned, and started again from scratch.
With treatments, we do have to weigh up the pros and cons. I myself, for instance, would not go through chemotherapy for the sake of a few extra weeks or months, and I would not do that to an animal. We also have to consider if the animal has a good chance of recovery within a short-ish period (convalescence is okay) -in order to have their quality of life back.
I always think 'quality of life' is whether the animal is still enjoying being on Earth. Even if some things become somewhat limited -are they still enjoying it?
With treatments, we do have to weigh up the pros and cons. I myself, for instance, would not go through chemotherapy for the sake of a few extra weeks or months, and I would not do that to an animal. We also have to consider if the animal has a good chance of recovery within a short-ish period (convalescence is okay) -in order to have their quality of life back.
I always think 'quality of life' is whether the animal is still enjoying being on Earth. Even if some things become somewhat limited -are they still enjoying it?