Trivia

Following an angry response from some audience members at the January 2016 Sundance premiere, a few festival reviewers purposefully spoiled the film in detail so as to deter animal lovers from seeing the film.

Heather Matarazzo turned down a possibility to reprise her role of Dawn Wiener from Welcome to the Dollhouse (1995). She was replaced by Greta Gerwig.

Brie Larson had filmed a scene for the film, but it was deleted from the final cut.

Keaton Nigel Cooke learned "Clair De Lune" by Debussy on flute for a scene in less than one week.

According to director Todd Solondz, the title character was portrayed by four dachshund show dogs but personally found them to be "dumb".