There are so many things going on in “Ice Age: Dawn of the Dinosaurs,” what with Scrat getting a girlfriend, Ellie about to deliver a mini-mammoth, Sid contemplating adoption, Diego dealing ...

Sloths have lisps, or didn’t you know? The ancient ground sloths did, as Leguizamo interprets Sid the Sloth in the Ice Age animated films. “Sid’s a vulnerable character, with a higher ...