- Cast: John Leguizamo, Ray Romano, Denis Leary, Queen Latifah, Simon Pegg, Seann William Scott, Josh Peck, Joey King, Atticus Shaffer, Chris Wedge, Eunice Cho, Karen Disher, Jason Fricchione, Bill Hader, Kelly Keaton, Clea Lewis, Jane Lynch, Christian Pikes, Carlos Saldanha, Kristen Wiig, Matt Adler, Cindy Slattery
- Directors: Carlos Saldanha, Mike Thurmeier
- Writers: Michael Berg, Peter Ackerman, Mike Reiss, Jason Carter Eaton
- Producers: John C. Donkin, Lori Forte
- Executive Producer: hris Wedge
- Art Direction: Mike Knapp
- Casting: Christian Kaplan
- Editor: Harry J. Hitner
- Music: John Powell
- Set Decorations: Arden Chan, Nash Dunnigan, Tom Humber, Jon Townley
After the events of "Ice Age: The Meltdown", life begins to change for Manny and his friends: Scrat is still on the hunt to hold onto his beloved acorn, while finding a possible romance in a female sabre-toothed squirrel named Scratte. Manny and Ellie, having since become an item, are expecting a baby, which leaves Manny anxious to ensure that everything is perfect for when his baby arrives. Diego is fed up with being treated like a house-cat and ponders the notion that he is becoming too laid-back. Sid begins to wish for a family of his own, and so steals some dinosaur eggs which leads to Sid ending up in a strange underground world where his herd must rescue him, while dodging dinosaurs and facing danger left and right, and meeting up with a one-eyed weasel known as Buck who hunts dinosaurs intently.
- Aspect Ratio: 1.85:1
- MPAA Warning: Some mild rude humor and peril
- Production Budget: $90 million
- Production Companies: Blue Sky Studios
The film will be released in RealD where available. The release garned some controversy when Fox announced that it would no longer pay to supply 3D glasses to theaters , which led a threat from a number of exhibitors to only show the film in standard 2D projection.