What is the name of the Netflix animated series about a horse who was a TV star?

The Netflix animated series about a horse who was once a television star is 'BoJack Horseman.' BoJack is a depressed, self-destructive former sitcom celebrity trying to revive his career and find meaning after his hit show has ended.

The series is set in a world where humans and anthropomorphic animals live together. Its central parody is the entertainment industry: BoJack is famous for starring in the 1990s sitcom 'Horsin' Around,' but his professional success does not resolve his loneliness, addiction, damaged relationships, or guilt.

Created by Raphael Bob-Waksberg, the show premiered on Netflix in 2014 and ran for six seasons. Will Arnett voices BoJack, with Alison Brie, Amy Sedaris, Paul F. Tompkins, and Aaron Paul among the principal cast. Although its bright animation and animal jokes suggest a conventional comedy, the series is also known for serious stories about depression, substance abuse, grief, fame, and accountability. It is not connected to 'Rick and Morty,' 'Family Guy,' or 'The Simpsons.'