CBS has cancelled Zoo after three seasons. Per THR, the sci-fi drama will not return for Season 4:
Produced in-house at CBS Television Studios, the drama was based on the best-seller about a wave of violent animal attacks against humans by author/executive producer James Patterson. Zoo was one of the network’s pricey scripted series that used the business model created by Under the Dome where Netflix signed a deal with CBS Television Studios to stream the show after its seasons were completed. The model created the ability to do expensive scripted shows in the typically little-watched summer months as the show was profitable off the bat thanks to the Netflix pact.
The series averaged 2.65 million viewers in its third season, down nearly 2 million viewers from season two, which averaged 4.45 million viewers. In the demo, the Sept. 21 season three finale drew a 0.5 rating among adults 18-49, even from the season three opener but down two-tenths from the season two finale.
RenewCancelTV has confirmed the cancellation of Zoo. The September 21, Season 3 finale will now serve as the series finale, despite creative plans for a fourth season.
Per sources, the are no current plans to shop Zoo Season 4 to other outlets.