This hatchling appears to be... dead?

Perhaps not. It seems to be active during the night.

Young dragons are relatively defenseless. They are born with relatively soft scales, which are shed and replaced with harder ones as the hatchling matures. Once a hatchling’s wings grow in, it typically marks the beginning of maturation. At this point they are often capable of hunting on their own and are usually left alone by their mother.

When the Vampire dragon Lieutenant Lidisnil found out about the tribe of Pygmies that lived near the lake, Queen Madame knew that no competence could be allowed in the path of world-domination. Therefore, she stole a spellbook and cast a "Freeze" spell over her daughter, Successor.

With her now ageless appearance and small size, almost looking as a weird Pygmy, Successor infiltrated in the Tribe, where she found about Great Papu's plans to create an Ultimate Undead Dragon. She serves as a spy, switching between the tribe and the Vampire colony, with new information every day. But as the Queen and her army try to discern a way to put an end to the Pygmies, it would seem that Successor has other things on mind. Rebelling against her mother, she took the spellbook that the Queen used on her, hoping that it'll help her to tame her own army of Undead and gain control over the Lagmonster and the Cave. But this is a dangerous task; if any of the parties finds out about her plans...