Popsugar Entertainment Summer Summer TV 2016 Your Ultimate Guide to Summer TV May 30, 2016 by Maggie Panos View On One Page Photo 29 of 42 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 29 Zoo When it returns: June 29 CBS's thriller about a rash of violent animal attacks is back with a second scary season. Previous Next Start Slideshow SummerSummer EntertainmentTV