Add Yahoo as a preferred source to see more of our stories on Google. Lemurs have a “built-in” toothcomb that helps the animal groom themselves and each other. Their secondary tongue, or “sublingua,” ...

Lemurs have a “built-in” toothcomb that helps the animal groom themselves and each other. Their secondary tongue, or “sublingua,” thoroughly cleans their toothcomb. These primates engage in ...