And look! Its back legs have become a second set of wings! It must be close to maturing.
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 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.
Galtryve is a brave and clever creature. He is playful and gentle. That is why he wanted to remain young. He knew that if he grew, he would be too serious and his mother would leave because he could take care of himself. He didn't want that because he loves his mother.