so if they completely come off they wouldn't grow back? the reason why i ask is i just noticed that my cham is missing a nail. i dont know if i bought it like that or something happened in his cage because i just noticed hes missing a Nail today. i dont know how hard it is for them to break a nail so i dont know if there cage is unsafe for them to climb around. its a screen cage and its not that tall, even if he fell from the very top of his cage and landed right on his nail/nails i dont think they would break. i made a screen cage around a square pot with a real plant(I'm not sure what the name of the plant is, sorry) so the bottom is potting soil so if he fell it would such a rough fall.