Genre: Animation | Action | Adventure | Comedy | Family | Romance[/center]

Ellie (Queen Latifah) and Manny (Ray Romano) are expecting their first child, and Manny is obsessed with making life perfect and safe for the family, since his first experiences as a husband and father went bad when his family was killed by hunters. At the same time, Diego (Denis Leary) finds himself unable to catch a cocky gazelle (Bill Hader) he has been stalking and decides to leave the herd, believing that he is losing his predatory nature as a tiger. Sid (John Leguizamo) grows jealous of Manny and Ellie and adopts three apparently abandoned eggs that he finds in an icy underground cavern and call them Eggbert, Shelly, and Yoko. Manny tells him to put them back, but Sid instead looks after the eggs, which hatch into baby Tyrannosaurus the next morning.[/center]

When Sid's attempt to adopt three dinosaur eggs gets him abducted by their real mother to an underground lost world, his friends attempt to rescue him.