I am in the process of bringing home a 16 year old mare (ex-harness racer turned broodmare). From what her seller tells me, she is sound and healthy with plenty of “pop”. She likes to go, but without the drama that sometimes comes with a younger horse. She’s definitely not as aged as some of the other horses I’m reading about, but I was worried. I feel a lot better to read about all these 20+ year old horses that are still loping around, jumping and showing the young horses how to be.