[2] G. oxycephalum is a robust powerful snake, with wide smooth scales on its belly that are ideal for climbing trees and across branches.

The female can reach a length of up to 2.4 m (almost 8 feet), while the male is generally a little bit smaller but brighter in coloration.

G. oxycephalum reaches sexually maturity at 4 years of age, and its eggs have a hatching time from 13 to 16 weeks.

The female lays on average between 3 and 8 eggs usually between September and January and the hatchlings are about 45 cm (18 inches) long.

As of 2015, the Red-tailed Green Ratsnake was categorized as "Least Concern" by the IUCN due to its relatively healthy population estimated at 15,000-20,000 individuals across its range.