This question already has an answer here:
This was touched on in here: "dragons as you describe them do not have the appendages necessary for careful, accurate control of their environment".
If there are "classic" dragons (i.e. large and with claws) with human level intelligence, what is a reasonable explanation for the ability to:
(1) Record information.
(2) Shape their environment (e.g. not being restricted to living in caves).
(3) Create / manufacture things in general.