A T.V. show or movie involving animals, that is setup to look like a reality show.
A few prime examples of this includes Meerkat Manor, Orangutan Island, Dark Days in Monkey City, and March of the Penguins.
Guy 1: "Dude are you watching Discovery Channel?"
Guy 2: "Yeah! Meerkat Manor is on! It's about the Whisker Family's trouble and struggle."
Guy 1: "Wait... Are those actual animals, WTF are you watching?"
Guy 2: "BeastReality."