• The 3rd highest grossing film of 2006, and the highest grossing animated film of 2006.

• Originally this film was set for a November 2005 release but was moved to March 2006, due to the events of Hurricane Katrina and due to Robots (2005) being released earlier in that year.

• The flashback in the movie was originally going to focus on Manny's conflict with his first family. However, Queen Latifah pitched the idea of the flashback in the film to center more on Ellie's origins.

• Blue Sky Studios' 3rd feature film.

• Animation took a relatively speedy eight months.

• Made double of what the first film made in the box office.

• Blue Sky Studios started working on a sequel to "Ice Age" when the first film was still in theaters.

• Cretaceous and Maelstrom are the only Ice Age Villains to succeed in killing someone as shown when they kill Fast Tony's unintelligent glyptodon Stu.

• Cholly (Alan Tudyk), the large animal that breaks wind in Sid's face, is a chalicothere: a large, clawed, herbivorous mammal distantly related to modern-day horses.

• The two sea reptiles that chase the Herd throughout the film are named Cretaceous and Maelstrom: Cretaceous, a Metriorhynchus, is the purple crocodilian, while Maelstrom, the stout green reptile, is a Globidens. There was initially going to be a third predator, who appeared in some early designs as a small axolotl-like creature, but it was cut out. The back story for the villains is that they were frozen millions of years ago and kept in suspended movement.

• The first film in 2006 to pass the $100 million mark.

• As an additional marketing ploy a special "anti-cell" spot was created with Sid complaining to the audience about a ringing cellular phone. The same was done for Brother Bear (2003), Robots (2005) and I, Robot (2004).

• Improvements in fur simulation made since the first film required subtle changes in the original character models. Sid, in particular, looks fatter with the more natural fur.

• Some of the Scrat sequences (e.g., the fight with the piranha, the encounter with the baby bird) were originally conceived for the opening sequence of this film, but were cut for time.

• The third computer-animated film to become a franchise after Toy Story (1995) and Shrek (2001).

• The species of deer shown in the crowds is based off two different species of extinct deer: Hoplitomeryx, which had a distinctive horn on its nose, and Megaloceros Savini, which was a smaller species of Irish Elk known for its long antlers.

• Surprisingly, animals similar to the horned beavers did exist. Ceratogaulus was a horned rodent, with the horns likely used for defence. However, it was not closely related to beavers, belonging to a separate and now-extinct family, and lacked the large, flat tail which it has in the movie. It more closely resembled a marmot or gopher.

• Though this was the highest grossing animated film of 2006 worldwide, domestically it fell short of Cars (2006) and Happy Feet (2006).

• To help promote the film, Scrat showed up in an episode of Family Guy (1999).

• Will Arnett's first animated film. Later he'd go onto voice Horst in Ratatouille (2007), Vlad the Bird in Horton Hears a Who! (2008), The Missing Link in Monsters vs. Aliens (2009), Mr Perkins in Despicable Me (2010), Pod Clock in the English dub of The The Secret World of Arrietty (2010), Surly Squirrel in The Nut Job films, Batman in The Lego Movie films, Slade in Teen Titans GO! To the Movies (2018), a hare in Dolittle (2020), Rayburn in Rumble (2021), and Sweet Pete in Chip 'n Dale: Rescue Rangers (2022).

• This is the only Ice Age sequel to not be released in 3D.

• Will Arnett, the voice of the gun slinging vulture, voices another vulture two years later in Horton Hears a Who! (2008).

• Humans were originally supposed to return in this sequel, even the ship was planned to be one built by humans, and Roshan was planned to return. In the end, the humans were removed from the film.

• The following were cut from the film: Originally a crisis would've erupted at the boat, as a vulture would've refused animals who did not have mates entry onto the boat (obviously taking the "ark" parallel further). A third reptile was going to appear alongside Cretaceous and Maelstrom. Originally the film was a No Antagonist story, but the filmmakers felt they needed an antagonist with a face, thus the creation of Cretaceous and Maelstrom Scrat was originally going to officially join the group, but was ultimately delegated to his traditional outsider role. The scene between Sid's encounter with the Mini-Sloths and the geyser field originally was a travel montage of the group crossing various perils. The director found it boring and livened things up with the "Food, Glorious Food" number, married with the previous concept of the group crossing the perilous landscape. Originally Ellie would've helped the group cross the geyser field by climbing to a tree and telling them where to go, and this would've separated her from Manny, Sid and Diego, as opposed to their fight in the final film.

• In designing Crash and Eddie, Peter de Séve looked up other small mammals, among them prairie dogs and meerkats.

• The role of a con-artist was originally intended to be in the first Ice Age (2002) film for Sid the sloth but was moved to the sequel for an armadillo named Fast Tony.

• Sid's parodies of Frank Sinatra's "The Way You Look Tonight", Buffalo Springfield's "For What It's Worth" and the children's song "If You're Happy and You Know It" were improvised by his voice actor John Leguizamo.

• This is the first Blue Sky Studios to become a franchise.

• The first computer-animated sequel to feature no humans.

• Jay Leno's second Blue Sky Studios film. The first being Robots (2005).

• This is the first computer-animated sequel not to be released on VHS and only released on DVD instead.

• Jack Angel and John Cygan provided voice cameos teaming up alongside Joseph Bolognacoincidentally John Cygan and Joseph Bologna died the same year.

• Twentieth Century Fox's first animated film since Titan A.E. (2000) to have a PG rating in Australia and the first Blue Sky Studios film to do so.

• It was only released on DVD in North America, but was also released on VHS in Argentina, Bulgaria, Czech Republic, Estonia, Italy, Japan, Korea, Poland and Russia.

• While all credited as additional voices, Sherry Lynn, Crispin Freeman and Jennifer Darling have all previously worked together in the english dub of Tenchi Muyô! (1992).

• The Lone Gunslinger Vulture is the second character in a Blue Sky Studios film to be a hidden villain. The first film to have a character do something like that is Robots (2005) with Ratchet. This means that the Lone Gunslinger Vulture is the secret tertiary antagonist.

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