It’s an undead baby dragon, produced by a failed magical spell. It probably would be cute if it weren’t partially decayed.
And look! It somehow managed to grow wings despite being dead.

Young dragons are relatively defenseless. Their scales don’t grow in until right before they mature, and they have almost no strength. Once a hatchling’s wings grow in, it marks the beginning of maturation. At this point they are usually left alone by their mother and begin to hunt and survive on their own.