Loss Of Your Best Friend And Adding A Pup

I miss dogs gone 50 + years - even though it is a fact of life I still can't help shedding a tear at times.  Some folks want to wait until the old dogs has passed to bring a new pup in. I can understand and you know your dog best. However, many many times when folk have brought in the new pup anyway the pup can learn many things from the 'boss' and the the 'boss' may 'enjoy' the company and opportunity to 'teach' the new pup with maybe a little rebound in liveliness.