You pick up the scroll labeled "Skull_Lucario," and see small sketches of dragons as well as information about them.

Dragon	Name	Type		Views	Unique Views	Clicks
	Nintoryu	Adult (♂)		4800	1482	133
	Midorii	Adult (♂)		2904	529	31
	baranohana	Adult (♀)		2921	524	37
	nouryoku	Adult (♂)		2916	527	29
	Bokuseki	Adult (♂)		1220	565	16
	Shiroi Ryu	Adult (♀)		1172	563	19
	Mizu no Ryu	Adult (♀)		1164	561	18

If you would like your own dragons, you'll have to go to the Cave Entrance.