Have 3 dogs, one really old for a large dog she is over 17. I have a heat lamp used for peeps on her now on the porch. And she is on a old mattress so she is off floor. The best and brightest dog we ever had and that is saying something since we had some good ones.
I'd take her on dirt road when riding my bike and it can get sandy and off balance.
So it is important fro her not to pull on lease.
One day she was determined to cross in front of me, run to other side almost making me fall over. I said 'what is wrong with you' ? I realized she was not about to let me be next to the car coming even if it meant not minding. She got between me and the strange car. Then went back and stayed on the right. Daughter was stomping on ground next to hubby setting up fence post, she didn't attack just warned her with growl and all teeth showing. She thought she might hurt hubby.
The dog is amazing. And can hardly walk but putting her down ain't gonna happen. She will die like we die, when it is her time.