They're about as tame as your average horse. They can still get spooked and upset, but otherwise, all it takes is a gentle hand and training to get them to obey you.

As for the dragons of legend, they're as big as a mountain and impossibly strong, with more eyes and teeth than they could possibly need.

The Risen, we suspect, were created with magic. What type or how is still unknown. But they're not living in the sense you and I are - they don't need to eat or breathe. All it takes is a good, hard strike to destroy them, like a heavy blast of magic or a powerful strike of the sword. Then they begin to evaporate and leave nothing behind.