Directed by Chris Renaud, the franchise stars the voices of Eric Stonestreet, Kevin Hart, Jenny Slate, Ellie Kemper, Lake Bell, Dana Carvey, Tara Strong, Hannibal Buress, and Bobby Moynihan, among others.

[1] Included as a mini-movie on The Secret Life of Pets' home media release, the short focuses around Norman from the film as he wanders the vents of Max's apartment and watches various scenarios of the residents.

Included as a mini-movie on The Secret Life of Pets 2's home media release, the plot focuses on Gidget imagining herself as a superhero and saving Max from an army of squirrels.

[2] A free-to-play mobile game developed by Electronic Arts, titled The Secret Life of Pets: Unleashed, was released in summer 2016.

In April 2019, Universal Studios Hollywood announced a new dark ride attraction entitled The Secret Life of Pets: Off the Leash!