Amy Sedaris hated doing the tongue-twisters, so the writers responded by giving her the most of any cast member.
In season two, the line "what are you doing here?" or a variation "what am I doing here?" is said at least once per episode.
Will Arnett named BoJack as the hardest role of his career to get inside, admitting that he sometimes took the darkness of the character home with him.
The first season of the show received mostly mixed reviews from critics. This may have been due to most outlets only reviewing the first few episodes of the season, unaware that the show developed a darker and deeper tone about midway through the first season. The improvement was so significant that it forced Indiewire to change its grading policy to watch a show's entire season upon availability instead of just the first half dozen or so episodes, which would have boosted their original rating of BoJack's first season.
Rare for an animated series, there is a table read before every episode, allowing the actors and actresses to interact with each other.