Which of these best describes the head of a green salamander?

The head of a green salamander is best described as appearing swollen just behind the eyes, which is a distinctive feature of this species. This characteristic contributes to its unique appearance, setting it apart from other salamander species. The swelling gives the head a rounded look that is quite noticeable when observing the animal in its natural habitat.

In contrast, other descriptions do not accurately capture the physical traits of the green salamander. For instance, a flat and wide head suggests a different morphology that is not typical of this species, while a small and pointed head would also be misleading as it does not reflect the actual shape observed in green salamanders. A triangular head shape might be confused with other amphibians or reptile species, but it does not align with the roundness characteristic of the green salamander’s head. This combination of features makes the swollen appearance behind the eyes the most accurate description.