Tyrannosaurus rouge: lips may have hidden T rex's fierce teeth

New research takes aim at the fanged portrayal of the T rex, suggesting enamel on its teeth was probably kept moist by thin, scaly lips much like those of lizards

Its image is one of a fierce predator who towered over most others, baring dozens of jagged, bone-crushing teeth.

But new research out of Toronto seeks to challenge depictions of the Tyrannosaurus rex, suggesting that its fearsome incisors might have been hidden behind a pair of lips.