I have the sweetest little young drake, almost 5 months old now, hand raised and raised alone as his sibling mysteriously died. Wouldn’t hurt a fly, and still follows me around, he even submits to my call duck ( who is a third of his size) that’s being mean to him. But I scratch his chest and sometimes he will lunge up my arm, and I heard it could be a dominance behavior. What do you guys think and should I do something about it?