It occurred to me that a dragon has no way of actually carrying treasure from wherever he got it from to his actual lair in order to hoard it. Does a dragon eat the treasure then regurgitate it later or hire people to haul it around?
Example: A dragon who lives in the mountains hears of a very rich city full of treasure, so he flies over and defeats the people of the city and now possesses the riches of the city...
...Now my question is, how does the dragon take the treasure from the city to his lair in the mountains?
Smaug had it made; he conquered a lair and a treasure hoard all at once.