Ears can protrude from the head for two main reasons or a combination of the two. The most common reason ears can protrude is due to the absence of the anti-helical fold. The anti-helical fold fails to form during the growth of the ear, and as a consequence, the ear protrudes. The second reason is if the conchal bowl, the part of the ear that forms a “bowl” is enlarged. The reality is that most protruding ears have a combination of the two.