Bitty is really slowing down these days. On cooler mornings it's hard for her to get moving and her progress is very slow. It's time to begin applying the happy dog test to her.
Happiness for Bitty is difficult to measure, she's never been an exhuberant dog. I suppose for her, it's more of a question "do you still want to get up?" For me that's a hard measure-hell, sometimes I don't want to get up either.
Right now Bitty's big day consists of walking slowly to the back of the yard, piddling, then walking over to her blanket in the sun for a sun bath. But no one loves the sun quite like an arthritic old dog, and as long as she still enjoys it, she'll have it.