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.

Orphaned at a young age, Rollo had to fend for himself before he even grew his wings. He is extremely skittish and shy, and fearful of other dragons. Despite being a Vampire Dragon, Rollo is very friendly, gentle and loves being around others, humans in-particular. Due to his fear of other dragons he cannot feed from them, and instead turns to his human companion for sustenance.