Trivia: The animated sequences were actually filmed in live-action with the actors on-set, and then rotoscoped with 2D animation. Director James Gunn wanted to emulate the films of Ralph Bakshi, which often employed similar techniques of live-action footage being rotoscoped with animation.
Trivia: The film is inspired by the classic Mel Brooks comedy "Blazing Saddles," and is intended to be a child-friendly retelling, with many near-identical sequences. In fact, it was originally titled "Blazing Samurai," and it would have been about an African-American man becoming a samurai. It was eventually retitled, and the studio decided to rework the narrative by making it about a dog living in a world of cats, in order to make the anti-racism message more subtle and "universal."
Trivia: Nicolas Cage originally didn't want to make the film, as he felt uncomfortable with the idea of playing himself in a movie. The director wrote him a very nice note, explaining why the movie was important to him and how they wanted to celebrate Cage's wild and varied career, which won Cage over.
Trivia: During the end credits, you can see various drawings. One of the drawings is The Backson from Winnie the Pooh (2011), which was also directed by Don Hall.
Trivia: Nicole Kidman is only nine years older than her on-screen son Alexander Skarsgard.
Trivia: Mike asked the Sheriff, "What flavor of ketchup?" and the Sheriff replied, "Heinz 57." Heinz 57 is not a flavor of ketchup and, contrary to popular belief, it did not reflect the number of varieties of condiments Heinz had for sale when the company started using the logo - which is what it actually is, a logo. There is an account of how the logo came to be. The Brand Director for Heinz reported that the 57 actually stands for his (5) and his wife's (7) "lucky" numbers. (00:44:55)
Trivia: Spoiler! There is a mid-credits scene with Commander Burnside. He is complimenting his space shield that also zaps giant bugs.
Trivia: Towards the end when young Adam takes the light saber, he jumps and lands saying "super hero landing", as mentioned by Deadpool in his movie played by Ryan Reynolds.
Trivia: There are numerous interpretations of "white elephant", such as something that is: junk (worthless); no longer wanted by the owner but may be valuable to others; no longer wanted by the owner but difficult to dispose of; too expensive to maintain and therefore a burden (more trouble than it is worth). What is too expensive to maintain or difficult to dispose of will, obviously, depend on the owner's resources (e.g, mansion, shopping mall, broken hot tub, inoperable classic car, piano).
Trivia: Spoiler! There is an extra scene at the end after the credits roll with Amenza paying tribute saying the names of the fallen Dahomey warriors one by one.
Trivia: When Jack Russell first begins walking down the hallway with the mural on the walls, the first image he sees is a comic book accurate drawing of Gorr the God Butcher, the main antagonist from Thor: Love and Thunder. (00:02:29)
Trivia: The army officers estimated that the Allosaurus had a territory measuring about the same area as that of wolves, or roughly the square miles of Rhode Island. Rhode Island is nicknamed "The Ocean State" [also, "Little Rhody"]. "The Island State" would not be an appropriate nickname because Rhode Island is not an island... but it does have four islands. As the smallest U.S. state, more than 220 Rhode Islands would fit into the second-largest state, Texas.