Island of the Not-So-Nice

Island of the Not-So-Nice is the second episode of Quack Pack.

Synopsis
The boys decide to take Daisy's pet iguana, Knuckles, for a walk, promising that nothing bad will happen. But when they get kidnapped by a mad scientist with a machine that can turn lifeforms back into their prehistoric ancestors, they find they might not be able to come through on that promise, but Knuckles comes with them and was accidentally turned into a Godzilla-like dinosaur that rampages though Duckburg.