What feature causes the strong visual resemblance that leads to the Caiman Lizard's common name?

Answer

Prominent, dark scales along the back of its neck

The common name confusion stems from the striking resemblance provided by the prominent, dark scales along the back of the lizard's neck, evoking the look of a true caiman.

What feature causes the strong visual resemblance that leads to the Caiman Lizard's common name?
reptilelizardKaiman