Premiere: Underdog - Review, by Glenn Kenny: "...a longer version of the film could conceivably have held children rapt…longer. But that same film would probably have sent adults screaming for the exits, subsequently leaving the children in need of adoption." [Rating: 1.5 out of 4] (August 6, 2007)
New York Daily News - Review, by Jack Mathews: "Made for viewers old enough to appreciate a talking pooch but too young to read or write about it." [Rating: 2.5 out of 4] (August 4, 2007)