Yes, they do age like any other creature. Look at the leader in 'Predator 2'. It's old, its colour has faded. It's making the least amount of movement possible. Perhaps it even suffers from arthritus (no, humans aren't the only creature to suffer from that - many animals do). It even has ot be flanked by a massive protective escort. If it was so superior to anything else in existence, it would only need one or two, if even that. Elders are revered because of what they have achieved or how they have led others among them. Being in peak physical condition in a completely different thing. PredKing87 and HuntersMoon, there is nothing to "read up" on them. The most amount of information we've ever had is a couple of appearances, both lasting for only a few seconds. In both instances, each of them simply stood there. No great feats of strength were in any way shown. They didn't even look the same, either in physical appearance, weapons choice or clothing style.