What feature distinguishes the head of the Emerald Tree Boa from its neck?

Answer

It appears disproportionately large when compared to the slender neck

A key physical trait of *Corallus caninus* is its head shape, which is unusually large relative to the slenderness of its neck.

What feature distinguishes the head of the Emerald Tree Boa from its neck?
identificationreptileboasnake