Oh, it varies. Some live centuries! A few live, basically forever if they don't get killed. But most...

[His hand drifts to his neck, and he rubs at the back of it, along the fine scar. He wasn't nearly as old as the elderly puzzler, let alone the king or queen... And, unless he counted time in afterlife, he never would be.]

Most live, more like human lifetimes, I think.