Not Zog the dragon himself but Sir Gadabout who is clearly in his 20s or even 30s and looks really slimy, and Princess Pearl seems to be no more than about 15 years old.
And don't get me started on Zog and the Flying Doctors, I've long since hidden that book from DS as Princess Pearl seems to have shacked up with Gadabout and they've drawn her even younger🤢
I love Julia D books but this one gives me the serious ick.