K-9 is a 1989 American action-comedy film starring James Belushi.
Belushi plays bad-tempered San Diego police detective Michael Dooley, who has been tagged for execution by a major international drug dealer named Ken Lyman.
To help, K-9 Sergeant Brannigan gives Dooley an unorthodox drug-sniffing police dog called “Jerry Lee” (named after rock-and-roll singer Jerry Lee Lewis). The duo attempt to put Lyman behind bars but Dooley quickly learns Jerry Lee is a mischievous smart aleck who works only when and how he wants to.
Many of the movie’s gags revolve around Jerry Lee’s playfully destructive episodes.