River Monsters: TV Series on Animal Planet

River Monsters Season 3 Episode 4: Chainsaw Predator airs on Sunday, May 1, 2011 at 10:00pm EDT on Animal Planet
River Monsters is a television series on Animal Planet hosted by Jeremy Wade and produced by Icon Films of Bristol, UK. The first season aired from 5 April to 17 May 2009. A second season began airing on 25 April 2010. The third season began on 10 April 2011
River Monsters travels worldwide with host, biologist and extreme angler Jeremy Wade to explore freshwater mysteries and local folklore, possibly debunk these myths and track down these harrowing tales. The show has taken viewers to Germany, Australia, India, Brazil, Ethiopia, Uganda, South Africa, The Republic of Congo, Alaska, Florida and Texas.
In the first season, Wade's weekly quest had him in search of Piranha, Goonch catfish (during his investigation of the Kali River goonch attacks) , Alligator gar, Wels catfish, Bull shark, Piraiba/Candiru, and Arapaima, all supposedly deadly creatures shrouded with mystery. The show also focuses on explaining the creature's feeding habits.
Rebroadcasts of the episodes with captions showing behind the scenes commentary from the host about the particular episode can also be seen on both Animal Planet and Discovery Channel, these episodes going by the title "River Monsters: Unhooked".