My dachshund Toby is going on 14 years this coming spring and well, he isn't a young puppy anymore. I am so afraid of him being in pain but at the same time he still seems happy. However, he has began to develop odd quirks. He has started eating his poop and pee inside or out no matter how frequently we let him outside, and he won't leave his bed unless we are taking him out or playing fetch. The last thing that is concerning me is his eyesight, last time he went to the vet she told us he was going blind from age.
All this together how do I know when quality of life is not enough?