Just when you thought they couldn't get any cooler, your favorite prehistoric pals are back. This time around, Manny and the herd discover a lost world of ferociously funny dinosaurs, including a cranky T-Rex who has a score to settle with Sid. Meanwhile, Scrat goes nuts over the beautiful Scratte, but is she trying to win his heart or steal his acorn?. "...best of the three films about our friends in the inter-species herd of plucky prehistoric heroes."--Roger Ebert, Chicago Sun-Times. "...could prove the third time really is the charm."--Variety. "Nice, sweet, safe."--Entertainment Weekly.