Bonds
The bonds between mates is obviously different than the bonds of companions. Grabon and Heron both speak of the bond shared between Hanna and Grabon, Gordon and Grabon and then Brom and Grabon and Griss and Grabon and as each dragon gains acceptance it seems a bond is established, something other than just friendship. Those bonds are psychic, they are power but they have not yet been explained. Will they be explained in future books? Well that is the plan. As a matter of fact in one future book a bond expert comes to visit Grabon’s territory.