Board Thread:Naruto 7: Discussion/@comment-24516546-20141107133049/@comment-1018594-20141124001943

Elveonora wrote: I wonder what happened to the Ootsutsuki's horns. Did they get lost from breeding with humans, or were they simply unique to Kaguya and resulted from the chakra fruit?

They're probably a recessive trait, like Saiyan tails.