The film almost never came out because it was held up for almost a year due to a lawsuit by a Seattle fisherman named Rodger May who claimed he owned the copyright to the film.
The lawsuit was eventually withdrawn.
All records of the lawsuit are public and can be found by a search for "Mayday vs. Animal Crackers".
This movie is based on a graphic novel that co-Director Scott Christian Sava wrote for his two children.
Mackenzie's toy monkey is the monkey from Cloudy With a Chance of Meatball's.
Emily Blunt and John Krasinski, who play a married couple, Zoe and Owen, are married in real-life as well.
The pizza truck that is featured in the chase scene is that of Joey's House of Pizza, a local Nashville pizza establishment.