My eldest is 32 this year. She is Gramma Pony, and that was all we knew her as, when she was given to us in the Winter of 1995. I since discovered in 2003, thanks to Stacy Score, that her real name was Dell Tera's Betty.
She is very healthy, and maintains her weight quite well.
Her only real problem is that she has lost nearly all of her teeth. Still, she prefers her senior feed (Allegra) served dry, and manages to eat it just fine that way. She had one filly for us in 1997, and serves her position well as "grandmother" of the herd. When foals are coming, she is so excited, and if it is her grandkid, she is a second mother to it, with the exception of nursing.
Here is a link to her page:
Gramma Pony
She's definitely a favorite for her amazing ability to survive. When we got her, she was pretty sickly. The gelding in my avatar is her grandson. She may "go on strike" this year, though, as we have no foals coming.
Adam, that's a wonderful story about your oldster. I think Gramma would love to have another of her very own, but she quit cycling regularly about eight years ago. No problemo, she's earned her retirement and then some.
Liz