Several euphemisms and sexual jokes that children will not understand.

Sid tries to milk a yak, not realizing that its a male; the act is not visible due to the yak's fur covering Sid's arm.

Buck sees a giant butterfly-like creature, and says "I knew him before he 'came out'".

A large monster fights the main characters.

A character has had his eye scratched out by a dinosaur. It shows the scene where it happens, but does not show any part of the actual eye being gone.

Ellie gives birth to Peaches, nothing is shown but she screams and Diego tells her to push multiple times.

Diego tries to hunt down a deer. He does not succeed.

A few raptor like dinosaurs chase the main heroes.

Several "bad guys" fall to their apparent deaths or are otherwise rendered impotent by the "good guys".

Scrat fights with a female flying squirrel over the acorn. In one instance, Scrat actually falls off a very high cliff, Wiley E Coyote style. He of course survives, but not before making a squirrel-shaped hole in the ground.

Some mild name calling.

Characters are seen accidentally breathing laughing gas, which can eventually cause them to die laughing.

The first appearance of the mother dinosaur is meant to be somewhat frightening.

The main characters are in danger situations and peril through most of the movie.

In the scene "All Alone Again", when Scrat and Scratte are together, the acorn is rejected numerous times. May be saddening for some.

Buck's backstory may scare some.

Rudy, a large aggressive dinosaur chases and fights the protagonists and has a frightening appearance.