Old and privileged

A 15 year old jogging mate.  He knows all my habits and quirks and would never pass on the opposite side of a tree, would always take tree steps behind on a steep descent, never pull on the leash, always keep an easy trot even when the running goes slow and he would never miss the scent of wild animals.  He never goes inside a house, so thanks to him I spend a lot of my time in the open.