Tammy and the T-Rex (1994)

He's the coolest pet in town!

An evil scientist implants the brain of Michael, a murdered high school student, into an animatronic Tyrannosaurus. Michael escapes, wreaks vengeance on the high school tormentors who killed him, and is reunited with his sweetheart Tammy. Together, the couple try to elude the mad scientist and the police and find a more appropriate vessel for Michael's brain.