TITANOSAUR,
Undefined,
16 years ago
the year on the pistol was 1715.
normaly if a human's diet is right, and kept in good shape they can live for 100 years.
A Predator on the other hand when they grow, the years on they're planet may be much diffrent then ours. the time for the sun (or suns) to fully rotate may take longer. although this might not make any influence on the growth of a Predator I'm just giving some ideas.
some species have been known to live for over 100 years. especualy crocs and Gators. it could also be because of they're diets and life style.