They are Reclusive, analytical, inventive and the one of the most intelligent in the dragon species.They can be moody(like Night), but still are great dragons. Night Furies are generally quite aggressive to any form of threat they find, similar to how the other dragons treat the Dragon Star team.But they can be brave( like Shadow sometimes).
Males are most of the time stronger than females, but females can still reach the great level of strength. But Shadow is far stronger than Toothless. Male nightfurys are stronger than females because they protect the family and for some reason more males(and there just headstrong any way).
Night furys are 84 miles per hour( in air). It is unknown how faster they are on ground.There not as fast as the Mix Fury, but still very fast!
Males(like all other male animals) fight other males for females.They compete in size first.They raise there hackles and stretch out there wings.Females are more impressed for bigger male night furys.The smaller male fury attacks the bigger one.Most of the time the much bigger ones win in the size comparson. But before they fight, they have a fire-ball contest. Night furys mating season is March to June.