"Tsst" (also known as "The Dog Whisperer") is the seventh episode and mid-season finale of the tenth season and the 146th overall episode of the American animated television series South Park. It originally aired on Comedy Central in the United States on May 3, 2006. In the episode, Liane has problems controlling her son Cartman and enlists several reality TV shows to help with his behavior problems.
The episode was written and directed by series co-creator Trey Parker and is rated TV-MA in the United States, except on syndicated broadcasts, where the episode is censored and has a TV-14 rating, instead. It focuses primarily on Eric Cartman, his mother, and "The Dog Whisperer" Cesar Millan.