The truth about Dragons (non-fiction)
If I Had a Dragon (not among our favorites but still pretty good if you are looking for a dragon book–probably more suitable for younger kids)
Sylvia and Bird (the same thing here, not the most exciting but a good bedtime story for younger lovers of dragons)
Again! (nice but not a lot of action)
A novel, not a picture book but I read it to my son when he was not even 6 and he loved it—it goes with the dinosaur theme here.
Dinosaur Roar (for little boys)
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