Alligator 1980
Directed by Lewis Teague | Starring: Robert Forster, Robin Riker, Michael V. Gazzo, Dean Jagger
A baby alligator is flushed down a toilet and survives by eating discarded lab animals that have been injected with growth hormones. The now gigantic animal escapes the city sewers and goes on a rampage, pursued by a cop and a big-game hunter.