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Ryan subjects Wilfred to a scientific study with unsettling results.
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#5In Season 4of 10 rated episodes
#30All-timeof 49 rated episodes
−0.1vs season avgSeason 4 averages 7.3
2014First airedJuly 9, 2014
Guest stars
Rutger Haueras Dr. Grummons
Tom Gallopas Dr. WoltCrew
Randall EinhornDirectorMatthew PattersonWriter