A baby alligator is flushed down a Chicago toilet and survives by eating discarded laboratory rats injected with growth hormones. The small reptile grows gigantic, escapes the city sewers, and goes on a rampage.
Alligator is a 1980 American horror film directed by Lewis Teague and written by John Sayles. It stars Robert Forster, Robin Riker and Michael V. Gazzo. It also includes an appearance by actress Sue Lyon in her last screen role to date.