how to get dragonz head

Summon a Dragnoz
/summon Skeleton ~ ~1 ~ {SkeletonType:1,Equipment:[{id:331},{id:301},{id:300},{id:299},{id:397,Damage:3,tag:{SkullOwner:dragnoz}}],CustomName:Dragnoz,CustomNameVisible:1,Attributes:[{Name:generic.maxHealth,Base:100},{Name:generic.movementSpeed,Base:0.5},{Name:generic.attackDamage,Base:100},{Name:generic.followRange,Base:200}]}