Things For Intelligent Dragons To Do

Writers sometimes seem to have a difficult time getting their heads about what a highly intelligent non-humanoid dragon does with itself all day.

So what do they do? How do they entertain themselves? What kind of constructive things do they do?

Chase cows for fun
Arrange rocks into artistic configurations
Hunt for rocks
Explore the world
Geology
Astronomy
Astrology
Philosophy
Memorize/make up poetry
Study other species/cultures
Mine for gold using flame
Enslave the puny humanoids
Make maps of the world from a dragon's-eye-view (including notes on winds and weather patterns)
Play dragon checkers or dragon chess with all that treasure they've accumulated. (Or use other handy objects, such as rocks, if they don't hoard treasure.)
Hold strength/endurance contests.
Gamble with their treasure.
Chase screaming people around town
Kidnap princesses
Play Halo 3
Hold debates with other intelligent dragons
Create RPGs where the Dragon gets to rescue the princess and slay the prince.