"Grandmother, why do you have such big ears?" is one of the most well-known questions in literature, posed of course by Red Riding Hood as she hesitantly observes the wolf dressed in her Grandmother's clothes. Had Red Riding Hood been a physicist, she might well have asked: "Grandmother, why are your two ears exactly the same length?"
source https://www.lifetechnology.com/blogs/life-technology-news-blog/physicists-develop-model-that-describes-length-growth-in-biological-systems