Wrath of the Triple Goddess
Rick Riordan
Percy Jackson and the Olympians (7)
Hero's Guide to Deadly Dragons
Cressida Cowell
How to Train Your Dragon (6)
The Ironwood Tree
Tony DiTerlizzi & Holly Black
The Spiderwick Chronicles (4)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)
The Red Pyramid
The Kane Chronicles (1)