If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

A receding chin can also happen as part of a condition that’s present from birth (called congenital). These things can be dangerous if they affect the ability to breathe or eat.

A cleft chin, also called a booty chin, ... After all, it’s important that you feel comfortable with the person helping you address a very visible part of your body. Sources Update History.