I think adults often fail to do the full body shed... not they would never do it, but it seems common for them to just shed a foot here, a tail there, a head over on the other side..just sort of random. I believe that stopping that every few weeks full body blow out is a sign of getting close to "adult" in size. Adults do continue to grow, but at a way reduced rate...the babies literally grow out of their skin on a regular basis.