I agree that we dont know enough to second guess the parents decision here although it does at least sound like the OP is old enough to participate in the discussion. Some of you may think Im an awful person, but I have had a dog euthanized that was not in physical pain and could have lived several more years. He didnt meet the criteria listed by many of you. He ate his food every day. He got around just fine. In fact he was pretty spry for a 14 year old dachshund with congestive heart failure (controlled with medication and diet). BUT he suffered from advanced canine cognitive dysfunction (dementia). He would stand and bark for hours at nothing. He wandered around aimlessly. He growled and occasionally snapped at family members for no apparent reason. He picked fights with my dominant, younger male that he had lived with and gotten along with for 7 years he was very fortunate that the younger boy was a very gentle and benevolent leader he could have been torn to shreds, but was only ever pinned to the ground. And this was a dog that was voted Mr. Congeniality in obedience class when he was younger. He completely forgot that there was such a thing as being housetrained. He wasnt incontinent, just oblivious. He would pee right in front of us and when we yelled at him, he just looked at us like we had two heads and kept peeing. We tried a belly band, but he wouldnt keep it on more than 5 minutes. In a different house, maybe we could have blocked off the kitchen with baby gates and just cleaned up his messes, but our house is very open and they dont make a baby gate long enough to block off our kitchen. Consequently he had to become an outside dog. That was OK until we hit summer. Summer in the south is not kind to old dogs with congestive heart failure. We tried medication for the dementia but it didnt help. After several heartto-heart discussions with my husband and my long-time vet, we all decided that though physically OK, he did not really have a good quality of life mentally, and it was time for us to say goodbye. Our daughter was too young to be part of the discussion at the time and in fact we didnt even tell her he was euthanized, just that he died at the vets. It was probably the hardest decision Ive ever made in my life. I could barely speak when I called to make the appointment. It would have been easier if he had been in pain. But, I dont regret the decision. He died peacefully in my arms before he suffered from the heat and humidity, before he bit someone, before my younger male got fed up and ripped him open. IMO, euthanasia is a very personal decision and may be made for different, but equally valid reasons. Done by caring people in a low stress environment it seems to me it is harder on the people involved than the animal. Our daughter is 13 now and though she would be allowed to participate in the discussion if it took place today, the final decision would still be made by the adults.