Fox's Glade Get nothing done

Charles had no clue what those words meant at first, mutha and farta -- so who weren't true wolves? And how did that impact him? Charles wasn't that curious a wolf, but he felt curiosity brimming up now when it came to the reason for his big ears. In the end, did it matter why they were so... prodigiously big? Maybe not. But something pulled him in. He couldn't decipher the words at first, but when he heard the word mutha again he realised the striking similarity to mother and realised that must be what he was trying to say. Maybe he was just not speaking that well? The other word was unknown to him, so he chose to ignore it.

My mother has normal ears, he said, the tone in his voice implying that he thought he was being lied to. If his mother looked normal-eared, then how would his mother impact his ear size?