After BoJack and Mr. Peanutbutter finish their competitions, Diane goes home with Mr. Peanutbutter. BoJack feeling lonely asks the bartender for something to help him forget his problems. She starts with cyanide which he claims is too strong. She then pulls out a bottle of Vodka to which he says, "What is this breakfast?" In BoJack Horseman: The BoJack Horseman Story, Chapter One (2014), BoJack can be seen putting Vodka into a smoothie for breakfast.
When Mr. Peanutbutter picks up Diane and BoJack at the airport, one of the airline name signs says "Hanawalt," which is the last name of the show's production designer.
The two dogs that bumped into each other at the grocery store in episode 2 can be seen dining in the booth next to Bojack, Dianne, and Mr. Peanutbutter in the first scene in the Elefante restaurant.