Ice Age: Dawn of the Dinosaurs (2009)

One year after the events of the second film, Manny and Ellie are expecting their child. Manny is determined to make life perfect and safe for both Ellie and the baby, as he doesn’t want them to suffer the same fate as his previous family. At the same time, Diego debates whether he should leave the herd because he thinks he’s losing his edge and isn’t meant for the family life. Sid begins to wish for a family of his own and takes three apparently abandoned eggs that he finds in an icy cave and calls them Egbert, Shelly, and Yoko. Manny tells him to put them back, but Sid ignores him and looks after the eggs, which hatch into baby Tyrannosaurus rex the next morning. Meanwhile, while looking for his beloved acorn, Scrat encounters a female flying sabertooth squirrel named Scratte, whom he falls in love with & battles with over his acorn when he finds she has it. The battle continues until they go though the ground & enter a lost world where they continue their war.

Although Sid tries his best to raise the three dinosaurs, their rambunctious behavior scares away all the younger animals and ruins the playground Manny built for his child, angering Manny. Not long after, a female Tyrannosaurus rex, whose eggs Sid stole, returns and carries both Sid and her young underground, with Diego in pursuit. Manny, Ellie, Crash and Eddie follow as well and discover that the icy cave leads to a vast subterranean jungle populated by dinosaurs thought to be extinct. Here, an angry Ankylosaurus threatens The Herd despite Diego’s efforts to fend it off. Then they are saved from a further crowd of angry reptiles by a deranged, quick-witted, one-eyed weasel named Buck.