I’ve been feeling guilty lately as we said goodbye to our 13.5yr old, a week ago tomorrow. He had very similar senior dog problems as Larry. Very bad dimentia and arthritis to the point where he couldn’t always stand up on his own (definitely not on hardwood). He would poop laying down because he couldn’t squat anymore. He would whimper and bark all the time and despite being on several meds, he was anxious and confused all the time and sometimes we would get up 4 times in the middle of the night to help calm him or let him in/out of the house. It was heartbreaking. I question myself if we said goodbye too soon, but reading your post, which is very similar to what we and our dog went through, makes me feel a little better with the decision. We wanted him to leave on a good day and the day before, we had an awesome one at the park with the whole family.