i knowthat nobody can give me a definite answer but im looking for some insight. ive had mordy for 2 months now, the owner said he was 4 months, which makes him 6 months though i doubt it cuz hes really little , about 3.5 inches. he had a bad experience with a vet which caused him to get a relapse of his URI as well as a huge decrease in appetite- some may remember this. he developed a soft shell consequently. i nursed him back to health and he eats like crazy, so that scare is over. his shell hardened up a bit but its not that hard, really. on the sides it gives a little, but he is just a little guy. im wondering how hard d o you think it ought to be?