Development In October 2013, it was announced that CBS had given
Zoo "a rare pilot production commitment for a pitch originating from sibling CBS TV Studios." In July 2014, the series was given a 13-episode straight-to-series order and added to the network's summer schedule. The series premiered on June 30, 2015, on
CBS. On October 2, 2015,
Zoo was renewed by CBS for a second season, which premiered on June 28, 2016. On August 10, 2016, CBS renewed the series for a third season, which premiered on June 29, 2017. There will not be a season 4 as it was cancelled due to low ratings.
Casting James Wolk was the first to be cast, in November 2014, followed later the same month by
Nora Arnezeder and
Nonso Anozie. The main cast was rounded out in January 2015, with
Kristen Connolly and
Billy Burke. In February,
Geoff Stults was cast in a recurring role for a "multi-episode arc". In March,
Carl Lumbly was cast in a recurring role. In March, 2016, Josh Salatin and
Alyssa Diaz were added to the cast as series regulars in the second season. In April,
Joanne Kelly was cast in a recurring role. In December 2016, Gracie Dzienny, who guest-starred in the second-season finale, was promoted to series regular for the third season. In January, 2017,
Aleks Paunovic was cast in a recurring role. In February,
Athena Karkanis, Hilary Jardine, and
Sophina Brown were cast in recurring roles.
Filming The series started filming in
New Orleans in January 2015. Production for the second season began filming in February 2016 in and around
Vancouver,
British Columbia,
Canada. The third season started filming in mid-January 2017, also in and around
Vancouver,
British Columbia. ==Broadcast==