One of the hardest questions I was asked when practicing as a veterinarian, was when it was time to stop and end the suffering of a terminally ill patient. Such a difficult decision. As a member of the family, it is such a horrible choice to be asked to make.
Rocky belonged to a friend and suffered from epilepsy and his seizures progressed and did not respond to treatment. He went to his vet and to specialists, but the idea of him being home alone and suffering when one of the episodes occurred was too much to bear for his family. So hard to fight the cost of advanced treatments, now that MRIs, CT scans and chemotherapy are options. So much guilt in not continuing treatments when budgets won't allow spending thousands of dollars for the very best of care.
My answer to the question was always that only they could know when it was time, the family knows the animal better than I ever could in the brief time I had with them. The family knows the heart and soul of their friend. When the pain of living that day surpasses the enjoyment the dog or cat has in seeing the owner, chasing the ball or the sound of the can opener ....despite the best of treatments, maybe ......it is time.
Hardest time ever in sharing your life with your best friend. But that time is so worth it.
Rocky lived a great life and was of the lucky dogs blessed with a caring loving family.