And look! It has grown 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.
Raspberry Pfft is a very immature little hatchling. Whenever someone speaks to him, he only ever responds by blowing a raspberry at them.
One day he blew a raspberry at Pillar MacCawber, after she caught him messing with her magic supplies. "Pfft" was his answer to her angry tirade, which only made her more irate.
One anger-fuelled spell saw Raspberry frozen as a hatchling forever.