Entertainment Movies WATCH: Take an Exclusive Look Inside 'The Secret Life of Pets' "Snowball is one lean, mean carrot-chewing machine," The Secret Life of Pets star Kevin Hart says of his character By Lindsay Kimble Lindsay Kimble Lindsay Kimble is a Senior Digital News Editor and the Sports Editor for PEOPLE Digital. She's worked at PEOPLE for over seven years as a writer, reporter and editor across our Entertainment, Lifestyle and News teams, covering everything from the Super Bowl to the Met Gala. She's been nominated for the ASME NEXT Awards for Journalists Under 30, and previously wrote for Us Weekly while on staff at Wenner Media. People Editorial Guidelines Published on July 1, 2016 11:00 AM Share Tweet Pin Email What are our pets up to when we’re not looking? The stars of The Secret Life of Pets have some ideas. “I’m definitely one of those people who thinks that my dog has very complex emotions,” Jenny Slate says in an exclusive “Look Inside” the upcoming animated film, in which she lends her voice to a white American Eskimo dog named Gidget. So what are these critters up to? “Throwing parties for each other, listening to rock n’ roll music,” speculates Eric Stonestreet, who plays big, furry pooch Duke. Kevin Hart, who voices crazed rabbit Snowball, says he’s even caught his two Doberman Pinschers in the act. “[I’ve seen] weird stuff, like the bathtub is downstairs,” Hart jokes, “Don’t know how that happened.” Hart also reveals his character is “representing a world of pets that are from the underground.” “Snowball is one lean, mean carrot chewing machine.” RELATED VIDEO: The Snuggle Is Real: Pets vs. Roombas – Who Will Win? The Secret Life of Pets, which also features the voices of Saturday Night Live‘s Bobby Moynihan, as well as Ellie Kemper and Louis C.K., imagines the lives of a gang of Manhattan animals. “It’s a sweet big-time adventure starring little, bitty characters,” Slate says. The Secret Life of Pets sneaks into theaters July 8.