Its nice to hear that oldies are thriving. I have this silly idea that mine will never start to show her age- stupid I know! She is a x breed though so I think they tend to outlive pedegrees!
We had a rescue Yorkie (came with papers so we knew his exact age) who lived to 19, he was not the tiny pocket variety though but a real working type. A friend had a standard daschund who lived to 22!!! And then he did not die from natural causes but was run over by a delivery truck on the yard. Have had Borzoi who lived to excess of 14 yrs, and friends Borzoi who have lived to 15 / 16 yrs, even one still going at 17.
I have a very active 11 year old collie x retriever, but he's just a spring chicken compared to the last two, a 17 year old collie x and a 19 year old beagle! He runs around with the 6 month old flatcoat who has given him a new lease of life!