The Terrible Thunderlizards is a segment that aired in Canada on YTV and in the United States as part of Eek! Stravaganza on the Fox Kids programming block.[1] It aired from November 20, 1993 to July 28, 1997. The series was originally intended as a spin off from Eek! The Cat. The segment was supposed to air at the start of Eek's second season in September 1993, but due to production delays, it began in November. Like Eek!, the segment was also a co-production of Nelvana and Fox Kids in association with Savage Studios Ltd.

The series chronicled the misadventures of a trio of dinosaur mercenaries released from incarceration (the prison sentences were never clarified) and charged with the task of eliminating two primitive human beings after scientists realize that if humanity is allowed to multiply it will mean the end of dinosaur supremacy. However, despite their superior size and firepower and the obliviousness of their targets, the mercenaries always fail to kill the humans with comic results. Their usual preferred method of attacking the humans was throwing bombs full of bees, which upon impact would usually then go after the dinosaurs; forcing them to run to water to get away from the bees. Although the mercenaries failed to eliminate the humans, they had better luck in defending Jurassic City from enemies, and had been successful in dangerous missions such as rescuing the kidnapped daughter of the president, which might explain why the team was allowed to continue working and not returned to prison.[2] Dee Snider, from the band Twisted Sister composed the show's theme song.