A few years ago - someone that I had sold a basenji to decided that the fence was in ill repair and he would get out - and their daughters friends would leave the gate open etc etc etc. so he needed to come back to me.
He was 8 and used to being a couch potato and really didn't understand having to come back to being a dog. I tried to find him a new home but everyone said he was too old.
He's going to be 14 this winter - so people who thought he was too old - really missed out on almost 6 years on a great dog - so when you are trying to rehome your oldies remind them of Wiley - still chasing bunnies - still laying in the sun and sure was worthy of having a great family - but he's stuck with me.