Back at the Barnyard (2007)

Season 2: Episode 48

In the series finale, Otis orders a satellite dish online in order to watch monkey boxing from Rio. Mrs. Beady sees this and believes that he is secretly signaling Aliens. Otis finds out and tries to prank Mrs. Beady with a fake alien invasion broadcast. This broadcast is sent to real aliens who are attracted to Earth and plan to conquer and destroy the planet. The animals must stop and stall them while they figure out their weakness.