It's not a morph thing, it's a baby thing. Hatchlings tend to be nippy, my youngsters this year are all pretty laid back, it's nice change I'm not sure if it's true, but I've noticed that young/baby reptiles tend to be more aggressive/nippy than adults of the same species. I'm thinking it's because they are an easy food item for many other animals and they have to keep from being eaten until they get bigger. IDK if it's true, but it makes sense.