10. Humans cannot swallow and breathe at the same time
Other mammals, and even non-mammals, can breathe while eating. In fact, babies can do this so that they can breathe while nursing, but this ability disappears by the time the baby is 9 months old, when the larynx begins to develop. In humans, the larynx is located too low in the throat compared to other animals, which makes it possible for humans to maintain vocalizations for longer periods of time and produce more vocal body sounds, contributing to construct speech.