How can I tell if it is time to euthanize my dog?

There can be many changes. We often associate eating with feeling good, but that's not always the case, especially for our larger breeds. Some large breed dogs - like labs - will eat until the very end. But I tend to say their back half is kind of shut down, as those are the dogs that often can’t get up to use the bathroom, and they can't get up to move. They may have pressure sores. They may not have control of their bowels or their bladder, making that a personal decision for everyone. Some dog owners may tolerate more nursing care than others. It ends up being a summation of all those things that diminish the dog's quality of life.