The Land Before Time II (1994)

As the opening song of the film (Peaceful Valley) indicates, Littlefoot and company's arrival to the Great Valley is a relatively recent occurrence. The children are living happily in their new home, under their families' watchful eyes. When the gang tries to get to the sheltering grass to play, but land in the tar pit (sinking sand in their terminology) surrounding it, the grownups come and save them and chastise them for disobeying them, then lecture them that night. Cera then tells the others that they need to prove they are independent by running away for a while into the Mysterious Beyond, a location just outside the valley. Before they leave, they notice two egg nappers (Struthiomimuses) stealing an egg from Ducky's nest. They chase them into the Beyond, during which a landslide occurs. The egg rolls safely back to the nest, but the five are under the impression that it was destroyed in the landslide. This upsets Ducky until she notices what looks like the egg, only slightly larger.

The gang "return" this egg to the Valley, only to find out that the stolen egg and this one are not the same. They decide to hatch it, nonetheless, until the egg hatches, revealing a baby sharptooth ("Tyrannosaurus Rex"). While the others run away, Littlefoot quickly realizes that he is not yet dangerous and tries to raise the hatchling on leaves; though this fails, the hatchling, whom Littlefoot names "Chomper", becomes content with a diet of insects. When he hears the others calling for help, as the egg nappers Ozzy and Strut are attacking them, he runs to their aid, while "Chomper" follows him. Chomper's shadow frightens the villains away, after which Littlefoot exchanges introductions between Chomper and the others. They accept him, until he bites Cera by instinct. He is told this is considered bad behaviour in the Great Valley, and runs off. When the others follow him, they find him chasing insects on top of the Smoking Mountain (volcano), all afraid the little sharptooth could fall into the crater of the volcano....